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Alnus (alder)
Taxonomy
Alnus was named by Miller (1754). It is extant.
It was assigned to Betulaceae by Gray (1822), Knowlton (1919), Knowlton (1926), MacGinitie (1941), Brown (1959), Chandler (1963), Lakhanpal et al. (1976), Chauhan (1991), Liu et al. (1996) and Srivastava and Suzuki (2001).
It was assigned to Betulaceae by Gray (1822), Knowlton (1919), Knowlton (1926), MacGinitie (1941), Brown (1959), Chandler (1963), Lakhanpal et al. (1976), Chauhan (1991), Liu et al. (1996) and Srivastava and Suzuki (2001).
Species
A. alaskana, A. americana, A. auraria (syn. A. rugosa), A. carpinifolia, A. carpinoides, A. cordata, A. corrallina, A. corylina, A. grandiflora, A. grewiopsis, A. inaequilateralis, A. kefersteinii, A. macrodonta, A. muelleri, A. nepalensis, A. nitida, A. operia, A. parvifolia, A. poolensis, A. praecordata (syn. A. cordata), A. rhamnifolia, A. rubra, A. rugosa, A. scalariforme, A. serrata, A. serrulata
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1754 | Alnus Miller |
| 1822 | Alnus Gray p. 244 |
| 1919 | Alnus Knowlton |
| 1926 | Alnus Knowlton |
| 1941 | Alnus MacGinitie |
| 1959 | Alnus Brown p. 128 |
| 1963 | Alnus Chandler p. 74 |
| 1976 | Alnus Lakhanpal et al. |
| 1991 | Alnus Chauhan |
| 1996 | Alnus Liu et al. |
| 2001 | Alnus Srivastava and Suzuki |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. Alnus Miller 1754 [alder]
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†Alnus alaskana Newberry 1882
†Alnus americana Ettingshausen 1883
†Alnus auraria Knowlton and Cockerell 1919
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Invalid names: Alnus rugosa Lesquereux 1888 [replaced]
†Alnus carpinifolia Lesquereux 1888
†Alnus carpinoides Lesquereux 1883
Alnus cordata Duby 1828
†Alnus corrallina Lesquereux 1883
†Alnus corylina Lesquereux 1882
†Alnus grandiflora Newberry 1882
†Alnus grewiopsis Ward 1885
†Alnus inaequilateralis Lesquereux 1875
†Alnus kefersteinii Göppert 1837
†Alnus macrodonta Knowlton 1902
†Alnus muelleri Ettingshausen 1883
Alnus nepalensis Don 1825
Alnus nitida Endlicher 1847
†Alnus operia MacGinitie 1941
†Alnus parvifolia Berry 1926
†Alnus poolensis Chandler 1963
†Alnus rhamnifolia Nuttall 1911
Alnus rubra Bongard 1833
†Alnus rugosa Koch 1872
†Alnus scalariforme Srivastava and Suzuki 2001
†Alnus serrata Newberry 1868
†Alnus serrulata Newberry 1898
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range
Maximum range based only on fossils: base of the Late/Upper Santonian to the top of the Holocene or 85.80000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 83.5 Ma
Minimum age of oldest fossil (stem group age): 83.5 Ma
Collections (370 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Coniacian - Campanian | Canada (British Columbia) | Alnus perantiqua (35174 35176) | |
| Late/Upper Santonian | Canada (Alberta) | Alnus perantiqua (35093) | |
| Late/Upper Campanian - Maastrichtian | Antarctica | Alnus muelleri (150274) | |
| Late/Upper Maastrichtian | USA (Texas) | Alnus trina (165562) | |
| Paleocene | China (Heilongjiang) | Alnus ellipsophylla, Alnus protobarbata, Alnus sp. (223817) | |
| Paleocene | USA (Wyoming) | Alnus spp. (31006 31219 31220 31221 31222 31289 31291 31293) | |
| Paleocene | USA (Virginia) | Alnus trina (233020 233022) | |
| Paleocene - Eocene | USA (Virginia) | Alnus trina (233016 233017 233018) | |
| Paleocene - Oligocene | Canada (Nunavut) | Alnus sp. (102066) | |
| Tertiary | Canada (Nunavut) | Alnus sp. (102070) | |
| Tertiary | Japan (Nagano) | Alnus japonica (22815) | |
| Clarkforkian | USA (Wyoming) | Alnus sp.1 (11356) | |
| Ypresian | Canada (British Columbia) | Alnus sp., Alnus parvifolia (227994) | |
| Eocene | USA (Washington) | Alnus operia (22993) | |
| Eocene | USA (Alabama) | Alnus trina (233005) | |
| Eocene | USA (Alaska) | Alnus carpinoides (112315) | |
| Eocene | USA (Missouri) | Alnus vera (231931 231934) | |
| Eocene | Canada (British Columbia) | Alnus sp., Alnus parvifolia (179231) | |
| Graybullian | USA (Wyoming) | Alnus sp. 1 (11336 11337 11338 11339 11342 11343 11349 11350 11463 11473 11475 11477 11489 11490 11493 11495 11496 11502 11503 11504) Alnus sp.1 (11363 11364 11365 11395 11400 11406 11456) | |
| Lostcabinian | USA (Wyoming) | Alnus sp. 1 (11318 11327 11328 11330 11344 11345 11346 11347 11464 11465 11466 11467 11468 11469 11471 11479 11481 11484 11498 11499) Alnus sp.1 (11354 11450 11454 11455 11460 11461) | |