-
[1501]
MNHN-P-P05558356
Herbier
-
[1502]
MNHN-P-P05558357
Herbier
-
[1503]
MNHN-P-P05558358
Herbier
-
[1504]
MNHN-P-P05558359
Herbier
-
[1505]
MNHN-P-P05558360
Herbier
-
[1506]
MNHN-P-P05558361
Herbier
-
[1507]
MNHN-P-P05558362
Herbier
-
[1508]
MNHN-P-P05558363
Herbier
-
[1509]
MNHN-P-P05558364
Herbier
-
[1510]
MNHN-P-P05558365
Herbier
-
[1511]
MNHN-P-P05558366
Herbier
-
[1512]
MNHN-P-P05558367
Herbier
Archipel du Cap-Vert
(CV)
-
[1513]
MNHN-P-P05558368
Herbier
-
[1514]
MNHN-P-P05558369
Herbier
-
[1515]
MNHN-P-P05558370
Herbier
-
[1516]
MNHN-P-P05558371
Herbier
-
[1517]
MNHN-P-P05558372
Herbier
-
[1518]
MNHN-P-P05558373
Herbier
-
[1519]
MNHN-P-P05558374
Herbier
-
[1520]
MNHN-P-P05558375
Herbier
-
[1521]
MNHN-P-P05558376
Herbier
-
[1522]
MNHN-P-P05558377
Herbier
-
[1523]
MNHN-P-P05558378
Herbier
-
[1524]
MNHN-P-P05558379
Herbier
-
[1525]
MNHN-P-P05558380
Herbier
-
[1526]
MNHN-P-P05558381
Herbier
-
[1527]
MNHN-P-P05558382
Herbier
-
[1528]
MNHN-P-P05558383
Herbier
-
[1529]
MNHN-P-P05558384
Herbier
-
[1530]
MNHN-P-P05558385
Herbier
-
[1531]
MNHN-P-P05558386
Herbier
-
[1532]
MNHN-P-P05558387
Herbier
-
[1533]
MNHN-P-P05558388
Herbier
-
[1534]
MNHN-P-P05558389
Herbier
-
[1535]
MNHN-P-P05558390
Herbier
-
[1536]
MNHN-P-P05558391
Herbier
-
[1537]
MNHN-P-P05558392
Herbier
-
[1538]
MNHN-P-P05558393
Herbier
-
[1539]
MNHN-P-P05558394
Herbier
-
[1540]
MNHN-P-P05558395
Herbier
-
[1541]
MNHN-P-P05558396
Herbier
-
[1542]
MNHN-P-P05558397
Herbier
-
[1543]
MNHN-P-P05558398
Herbier
-
[1544]
MNHN-P-P05558399
Herbier
-
[1545]
MNHN-P-P05558400
Herbier
-
[1546]
MNHN-P-P05558401
Herbier
-
[1547]
MNHN-P-P05558402
Herbier
-
[1548]
MNHN-P-P05558403
Herbier
-
[1549]
MNHN-P-P05558404
Herbier
-
[1550]
MNHN-P-P05558405
Herbier
-
[1551]
MNHN-P-P05558406
Herbier
-
[1552]
MNHN-P-P05558407
Herbier
-
[1553]
MNHN-P-P05558408
Herbier
-
[1554]
MNHN-P-P05558409
Herbier
-
[1555]
MNHN-P-P05558410
Herbier
-
[1556]
MNHN-P-P05558411
Herbier
-
[1557]
MNHN-P-P05558412
Herbier
-
[1558]
MNHN-P-P05558413
Herbier
-
[1559]
MNHN-P-P05558414
Herbier
-
[1560]
MNHN-P-P05558415
Herbier
-
[1561]
MNHN-P-P05558416
Herbier
-
[1562]
MNHN-P-P06809297
Herbier
-
[1563]
MNHN-P-P06809298
Herbier
-
[1564]
MNHN-P-P06809299
Herbier
-
[1565]
MNHN-P-P06809300
Herbier
-
[1566]
MNHN-P-P06809301
Herbier
-
[1567]
MNHN-P-P06809302
Herbier
-
[1568]
MNHN-P-P06809303
Herbier
-
[1569]
MNHN-P-P06809304
Herbier
-
[1570]
MNHN-P-P06809305
Herbier
-
[1571]
MNHN-P-P06809306
Herbier
-
[1572]
MNHN-P-P06837690
Herbier
-
[1573]
MNHN-P-P06837691
Herbier
-
[1574]
MNHN-P-P06837692
Herbier
-
[1575]
MNHN-P-P06837729
Herbier
-
[1576]
MNHN-P-P06773290
Herbier
-
[1577]
MNHN-P-P06780304
Herbier
-
[1578]
MNHN-P-P06780336
Herbier
-
[1579]
MNHN-P-P06780368
Herbier
-
[1580]
MNHN-P-P06780376
Herbier
-
[1581]
MNHN-P-P06780378
Herbier
-
[1582]
MNHN-P-P01176377
Herbier
Collection
Herbier de Vaillant
-
[1583]
MNHN-P-P01183277
Herbier
Kilian, N.|Hein, & P.
YP 2927
-
[1584]
MNHN-P-P01183365
Herbier
Mission française d'étude du Wabi Shebelle 3238
Guillaumet, J.-L.
3238
-
[1585]
MNHN-P-P01191904
Herbier
-
[1586]
MNHN-P-P01191916
Herbier
-
[1587]
MNHN-P-P01191917
Herbier
Sénégal
(SN)
-
Barguy (environs de Dakar)
-
[1588]
MNHN-PAT-PAT002287
Fruits / graines
Collection
A. Chevalier
-
Afrique tropicale française
-
[1589]
MNHN-PC-FUSION97303
Herbier
Collection
Herbier Montagne
Castagne Jean Louis Martin
-
[1590]
MNHN-P-P04463946
Herbier
-
[1591]
MNHN-P-P05514289
Herbier
-
[1592]
TOU-TOU-TOU003459
Herbier
-
[1593]
SNSNMC-CHE-CHE008908
Herbier
-
[1594]
SNSNMC-CHE-CHE008917
Herbier
-
[1595]
-
[1596]
-
[1597]
-
[1598]
-
[1599]
-
[1600]
-
[1601]
UM-MPU-MPU204458
Herbier
-
[1602]
UM-MPU-MPU204459
Herbier
-
[1603]
UM-MPU-MPU396686
Herbier
-
[1604]
UM-MPU-MPU396689
Herbier
-
[1605]
UM-MPU-MPU396690
Herbier
-
[1606]
UM-MPU-MPU888446
Herbier
Collection
Herbier de François Harvey
-
[1607]
UM-MPU-MPU888447
Herbier
Collection
Herbier de François Harvey
-
[1608]
UM-MPU-MPU888448
Herbier
Collection
Herbier de François Harvey
-
[1609]
UM-MPU-MPU888449
Herbier
Collection
Herbier de François Harvey
-
[1610]
UM-MPU-MPU888450
Herbier
Collection
Herbier de François Harvey
-
[1611]
UM-MPU-MPU888451
Herbier
Collection
Herbier de François Harvey
-
[1612]
UM-MPU-MPU888452
Herbier
Collection
Herbier de François Harvey
-
[1613]
UM-MPU-MPU888453
Herbier
Collection
Herbier de François Harvey
-
[1614]
UM-MPU-MPU888454
Herbier
Collection
Herbier de François Harvey
-
[1615]
UM-MPU-MPU888455
Herbier
Collection
Herbier de François Harvey
-
[1616]
UM-MPU-MPU888456
Herbier
Collection
Herbier de François Harvey
-
[1617]
UM-MPU-MPU888457
Herbier
Collection
Herbier de François Harvey
-
[1618]
UM-MPU-MPU888458
Herbier
Collection
Herbier de François Harvey
-
[1619]
UM-MPU-MPU888459
Herbier
Collection
Herbier de François Harvey
-
[1620]
UM-MPU-MPU888460
Herbier
Collection
Herbier de François Harvey
-
[1621]
UM-MPU-MPU888461
Herbier
Collection
Herbier de François Harvey
-
[1622]
UM-MPU-MPU888462
Herbier
Collection
Herbier de François Harvey
-
[1623]
UM-MPU-MPU888463
Herbier
Collection
Herbier de François Harvey
-
[1624]
Herbier
Collection
Herbier de François Harvey
-
[1625]
-
[1626]
-
[1627]
-
[1628]
-
[1629]
UM-MPU-MPU1120561
Herbier
-
[1630]
UM-MPU-MPU1120562
Herbier
-
[1631]
UM-MPU-MPU1120563
Herbier
-
[1632]
UM-MPU-MPU1120564
Herbier
-
[1633]
UM-MPU-MPU1120565
Herbier
-
[1634]
UM-MPU-MPU1120566
Herbier
-
[1635]
UM-MPU-MPU1120567
Herbier
-
[1636]
UM-MPU-MPU1120568
Herbier
-
[1637]
UM-MPU-MPU1120569
Herbier
-
[1638]
UM-MPU-MPU1120570
Herbier
-
[1639]
UM-MPU-MPU1120571
Herbier
-
[1640]
UM-MPU-MPU1120572
Herbier
-
[1641]
UM-MPU-MPU1120573
Herbier
-
[1642]
UM-MPU-MPU1120574
Herbier
-
[1643]
UM-MPU-MPU1120575
Herbier
-
[1644]
UM-MPU-MPU1120576
Herbier
-
[1645]
UM-MPU-MPU1120577
Herbier
-
[1646]
UM-MPU-MPU1120578
Herbier
-
[1647]
UM-MPU-MPU1120579
Herbier
-
[1648]
UM-MPU-MPU1120580
Herbier
-
[1649]
UM-MPU-MPU1120581
Herbier
-
[1650]
UM-MPU-MPU1120582
Herbier
-
[1651]
UM-MPU-MPU1120583
Herbier
-
[1652]
UM-MPU-MPU1120584
Herbier
-
[1653]
UM-MPU-MPU1120585
Herbier
-
[1654]
UM-MPU-MPU1120586
Herbier
-
[1655]
UM-MPU-MPU1120587
Herbier
-
[1656]
UM-MPU-MPU1120588
Herbier
-
[1657]
UM-MPU-MPU1120589
Herbier
-
[1658]
UM-MPU-MPU1120590
Herbier
-
[1659]
UM-MPU-MPU1120591
Herbier
-
[1660]
UM-MPU-MPU1120592
Herbier
-
[1661]
UM-MPU-MPU1120593
Herbier
-
[1662]
UM-MPU-MPU1120594
Herbier
-
[1663]
UM-MPU-MPU1120595
Herbier
-
[1664]
UM-MPU-MPU1120596
Herbier
-
[1665]
UM-MPU-MPU1120597
Herbier
-
[1666]
UM-MPU-MPU1120598
Herbier
-
[1667]
UM-MPU-MPU1120599
Herbier
-
[1668]
UM-MPU-MPU1120600
Herbier
-
[1669]
UM-MPU-MPU1120601
Herbier
-
[1670]
UM-MPU-MPU1120602
Herbier
-
[1671]
UM-MPU-MPU1120603
Herbier
-
[1672]
UM-MPU-MPU1120604
Herbier
-
[1673]
UM-MPU-MPU1120605
Herbier
-
[1674]
UM-MPU-MPU1120606
Herbier
-
[1675]
UM-MPU-MPU1120607
Herbier
-
[1676]
UM-MPU-MPU1120608
Herbier
-
[1677]
UM-MPU-MPU1120609
Herbier
-
[1678]
UM-MPU-MPU1120610
Herbier
-
[1679]
UM-MPU-MPU1120611
Herbier
-
[1680]
UM-MPU-MPU1120612
Herbier
-
[1681]
UM-MPU-MPU1120613
Herbier
-
[1682]
UM-MPU-MPU1120614
Herbier
-
[1683]
UM-MPU-MPU1120615
Herbier
-
[1684]
UM-MPU-MPU1120616
Herbier
-
[1685]
UM-MPU-MPU1120617
Herbier
-
[1686]
UM-MPU-MPU1120618
Herbier
-
[1687]
UM-MPU-MPU1120619
Herbier
-
[1688]
UM-MPU-MPU1120620
Herbier
-
[1689]
UM-MPU-MPU1120621
Herbier
-
[1690]
UM-MPU-MPU1120622
Herbier
-
[1691]
UM-MPU-MPU1120623
Herbier
-
[1692]
UM-MPU-MPU1120624
Herbier
-
[1693]
UM-MPU-MPU1120625
Herbier
-
[1694]
UM-MPU-MPU1120626
Herbier
-
[1695]
UM-MPU-MPU1120627
Herbier
-
[1696]
UM-MPU-MPU1120628
Herbier
-
[1697]
UM-MPU-MPU1120629
Herbier
-
[1698]
UM-MPU-MPU1120630
Herbier
-
[1699]
UM-MPU-MPU1120631
Herbier
-
[1700]
UM-MPU-MPU1120632
Herbier
-
[1701]
UM-MPU-MPU1120633
Herbier
-
[1702]
UM-MPU-MPU1120634
Herbier
-
[1703]
UM-MPU-MPU1120635
Herbier
-
[1704]
UM-MPU-MPU1120636
Herbier
-
[1705]
UM-MPU-MPU1120637
Herbier
-
[1706]
UM-MPU-MPU1120638
Herbier
-
[1707]
UM-MPU-MPU1120639
Herbier
-
[1708]
UM-MPU-MPU1120640
Herbier
-
[1709]
UM-MPU-MPU1120641
Herbier
-
[1710]
UM-MPU-MPU1120642
Herbier
-
[1711]
UM-MPU-MPU1120643
Herbier
-
[1712]
UM-MPU-MPU1120644
Herbier
-
[1713]
UM-MPU-MPU1120645
Herbier
-
[1714]
UM-MPU-MPU1120646
Herbier
-
[1715]
UM-MPU-MPU1120647
Herbier
-
[1716]
UM-MPU-MPU1120648
Herbier
-
[1717]
UM-MPU-MPU1120649
Herbier
-
[1718]
UM-MPU-MPU1120650
Herbier
-
[1719]
UM-MPU-MPU1120651
Herbier
-
[1720]
UM-MPU-MPU1120652
Herbier
-
[1721]
UM-MPU-MPU1120653
Herbier
-
[1722]
UM-MPU-MPU1120654
Herbier
-
[1723]
UM-MPU-MPU1120655
Herbier
-
[1724]
UM-MPU-MPU1120656
Herbier
-
[1725]
UM-MPU-MPU1120657
Herbier
-
[1726]
UM-MPU-MPU1120658
Herbier
-
[1727]
UM-MPU-MPU1120701
Herbier
-
[1728]
UM-MPU-MPU1120702
Herbier
-
[1729]
UM-MPU-MPU1120705
Herbier
-
[1730]
UM-MPU-MPU1120706
Herbier
-
[1731]
UM-MPU-MPU1121036
Herbier
-
[1732]
UM-MPU-MPU1121042
Herbier
-
[1733]
UM-MPU-MPU1121043
Herbier
-
[1734]
UM-MPU-MPU1121051
Herbier
-
[1735]
UM-MPU-MPU1121052
Herbier
-
[1736]
UM-MPU-MPU1121053
Herbier
-
[1737]
UM-MPU-MPU1121054
Herbier
-
[1738]
UM-MPU-MPU1121055
Herbier
-
[1739]
UM-MPU-MPU1121056
Herbier
-
[1740]
UM-MPU-MPU1121207
Herbier
-
[1741]
UM-MPU-MPU1121211
Herbier
-
[1742]
UM-MPU-MPU1121212
Herbier
-
[1743]
UM-MPU-MPU1121213
Herbier
-
[1744]
UM-MPU-MPU1121214
Herbier
-
[1745]
UM-MPU-MPU1121215
Herbier
-
[1746]
-
[1747]
-
[1748]
-
[1749]
-
[1750]
-
[1751]
-
[1752]
-
[1753]
-
[1754]
-
[1755]
-
[1756]
-
[1757]
-
[1758]
-
[1759]
-
[1760]
-
[1761]
-
[1762]
-
[1763]
-
[1764]
-
[1765]
-
[1766]
-
[1767]
-
[1768]
-
[1769]
-
[1770]
-
[1771]
-
[1772]
-
[1773]
-
[1774]
-
[1775]
-
[1776]
-
[1777]
-
[1778]
-
[1779]
-
[1780]
-
[1781]
-
[1782]
UM-MPU-MPU260457
Herbier
-
[1783]
UM-MPU-MPU260458
Herbier
-
[1784]
UM-MPU-MPU260459
Herbier
-
[1785]
UM-MPU-MPU260460
Herbier
-
[1786]
UM-MPU-MPU260461
Herbier
-
[1787]
UM-MPU-MPU260462
Herbier
-
[1788]
UM-MPU-MPU260463
Herbier
-
[1789]
UM-MPU-MPU260464
Herbier
-
[1790]
UM-MPU-MPU260465
Herbier
-
[1791]
UM-MPU-MPU241781
Herbier
-
[1792]
UM-MPU-MPU241782
Herbier
-
[1793]
UM-MPU-MPU241783
Herbier
-
[1794]
UM-MPU-MPU241784
Herbier
-
[1795]
UM-MPU-MPU241785
Herbier
-
[1796]
UM-MPU-MPU241786
Herbier
-
[1797]
UM-MPU-MPU241787
Herbier
-
[1798]
UM-MPU-MPU241788
Herbier
-
[1799]
UM-MPU-MPU241789
Herbier
-
[1800]
UM-MPU-MPU241790
Herbier
-
[1801]
UM-MPU-MPU241791
Herbier
-
[1802]
UM-MPU-MPU241792
Herbier
-
[1803]
UM-MPU-MPU241793
Herbier
-
[1804]
UM-MPU-MPU241794
Herbier
-
[1805]
UM-MPU-MPU241795
Herbier
-
[1806]
UM-MPU-MPU241802
Herbier
-
[1807]
UM-MPU-MPU255199
Herbier
-
[1808]
UM-MPU-MPU255200
Herbier
-
[1809]
UM-MPU-MPU255201
Herbier
-
[1810]
UM-MPU-MPU256547
Herbier
-
[1811]
UM-MPU-MPU115523
Herbier
-
[1812]
UM-MPU-MPU115524
Herbier
-
[1813]
UM-MPU-MPU115898
Herbier
-
[1814]
UM-MPU-MPU115899
Herbier
-
[1815]
UM-MPU-MPU115900
Herbier
-
[1816]
UM-MPU-MPU115901
Herbier
-
[1817]
UM-MPU-MPU115902
Herbier
-
[1818]
UM-MPU-MPU115903
Herbier
-
[1819]
UM-MPU-MPU115904
Herbier
-
[1820]
UM-MPU-MPU1152460
Herbier
-
[1821]
UM-MPU-MPU1273244
Herbier
-
[1822]
UM-MPU-MPU1273245
Herbier
-
[1823]
UM-MPU-MPU1273246
Herbier
-
[1824]
UM-MPU-MPU1273247
Herbier
-
[1825]
UM-MPU-MPU1273248
Herbier
-
[1826]
UM-MPU-MPU1263576
Herbier
-
[1827]
UM-MPU-MPU1263577
Herbier
-
[1828]
UM-MPU-MPU1263578
Herbier
-
[1829]
UM-MPU-MPU1263579
Herbier
-
[1830]
UM-MPU-MPU1263580
Herbier
-
[1831]
UM-MPU-MPU1263581
Herbier
-
[1832]
UM-MPU-MPU1263582
Herbier
-
[1833]
UM-MPU-MPU1263583
Herbier
-
[1834]
UM-MPU-MPU1263584
Herbier
-
[1835]
UM-MPU-MPU1263585
Herbier
-
[1836]
UM-MPU-MPU1263586
Herbier
-
[1837]
UM-MPU-MPU1263587
Herbier
-
[1838]
UM-MPU-MPU1263588
Herbier
-
[1839]
UM-MPU-MPU1263589
Herbier
-
[1840]
UM-MPU-MPU1263590
Herbier
-
[1841]
UM-MPU-MPU1263591
Herbier
-
[1842]
UM-MPU-MPU1263592
Herbier
-
[1843]
UM-MPU-MPU1263593
Herbier
-
[1844]
UM-MPU-MPU1263594
Herbier
-
[1845]
UM-MPU-MPU1263595
Herbier
-
[1846]
UM-MPU-MPU1263596
Herbier
-
[1847]
UM-MPU-MPU1263597
Herbier
-
[1848]
UM-MPU-MPU1263598
Herbier
-
[1849]
UM-MPU-MPU1263599
Herbier
-
[1850]
UM-MPU-MPU1263600
Herbier
-
[1851]
UM-MPU-MPU1263601
Herbier
-
[1852]
UM-MPU-MPU1263602
Herbier
-
[1853]
UM-MPU-MPU1263603
Herbier
-
[1854]
UM-MPU-MPU1263604
Herbier
-
[1855]
UM-MPU-MPU1263605
Herbier
-
[1856]
UM-MPU-MPU1263606
Herbier
-
[1857]
UM-MPU-MPU1263607
Herbier
-
[1858]
UM-MPU-MPU1263608
Herbier
-
[1859]
UM-MPU-MPU1263609
Herbier
-
[1860]
UM-MPU-MPU1263610
Herbier
-
[1861]
UM-MPU-MPU1263611
Herbier
-
[1862]
UM-MPU-MPU1263612
Herbier
-
[1863]
UM-MPU-MPU1263613
Herbier
-
[1864]
UM-MPU-MPU1263614
Herbier
-
[1865]
UM-MPU-MPU1263615
Herbier
-
[1866]
UM-MPU-MPU1263616
Herbier
-
[1867]
UM-MPU-MPU1263617
Herbier
-
[1868]
UM-MPU-MPU1263618
Herbier
-
[1869]
UM-MPU-MPU1263619
Herbier
-
[1870]
UM-MPU-MPU1263620
Herbier
-
[1871]
UM-MPU-MPU1263621
Herbier
-
[1872]
UM-MPU-MPU1263622
Herbier
-
[1873]
UM-MPU-MPU1263623
Herbier
-
[1874]
UM-MPU-MPU1263624
Herbier
-
[1875]
UM-MPU-MPU1263625
Herbier
-
[1876]
UM-MPU-MPU1263626
Herbier
-
[1877]
UM-MPU-MPU1263627
Herbier
-
[1878]
UM-MPU-MPU1263628
Herbier
-
[1879]
UM-MPU-MPU1263629
Herbier
-
[1880]
UM-MPU-MPU1263630
Herbier
-
[1881]
UM-MPU-MPU1263631
Herbier
-
[1882]
UM-MPU-MPU1263632
Herbier
-
[1883]
UM-MPU-MPU1263633
Herbier
-
[1884]
UM-MPU-MPU1263634
Herbier
-
[1885]
UM-MPU-MPU1263635
Herbier
-
[1886]
UM-MPU-MPU1230425
Herbier
-
[1887]
UM-MPU-MPU1230426
Herbier
-
[1888]
UM-MPU-MPU1230427
Herbier
-
[1889]
UM-MPU-MPU1230428
Herbier
-
[1890]
UM-MPU-MPU1230435
Herbier
-
[1891]
UM-MPU-MPU1230441
Herbier
-
[1892]
UM-MPU-MPU1230442
Herbier
-
[1893]
UM-MPU-MPU1230443
Herbier
-
[1894]
UM-MPU-MPU1230444
Herbier
-
[1895]
UM-MPU-MPU357009
Herbier
-
[1896]
UM-MPU-MPU342326
Herbier
-
[1897]
UM-MPU-MPU351906
Herbier
-
[1898]
UM-MPU-MPU672490
Herbier
-
[1899]
UM-MPU-MPU713827
Herbier
-
[1900]
UM-MPU-MPU713828
Herbier
-
[1901]
UM-MPU-MPU430227
Herbier
-
[1902]
UM-MPU-MPU411290
Herbier
Oubangui-Chari
(CF)
-
Région de Bambari, route d'Alindao, Savane et Lousseké
-
[1903]
UM-MPU-MPU411291
Herbier
République Centrafricaine
(CF)
-
Oubangui. Région de Bangui, route de Damara à Oumba
-
[1904]
UM-MPU-MPU464316
Herbier
-
[1905]
UM-MPU-MPU185588
Herbier
-
[1906]
UM-MPU-MPU185589
Herbier
-
[1907]
UM-MPU-MPU185590
Herbier
-
[1908]
UM-MPU-MPU185591
Herbier
-
[1909]
UM-MPU-MPU185592
Herbier
-
[1910]
UM-MPU-MPU185593
Herbier
-
[1911]
UM-MPU-MPU185594
Herbier
-
[1912]
UM-MPU-MPU185595
Herbier
-
[1913]
UM-MPU-MPU185596
Herbier
-
[1914]
UM-MPU-MPU185597
Herbier
-
[1915]
UM-MPU-MPU198269
Herbier
-
[1916]
UM-MPU-MPU198270
Herbier
-
[1917]
UM-MPU-MPU198271
Herbier