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- subtribe Baeriinae genusAmblyopappus speciesAmblyopappus pusillus Hooker & Arnott J. Bot. (Hooker) 3: 321. 1841. John L. Strother Illustrated Treatment appears2 KB (143 words) - 21:15, 5 November 2020
- speciesUmbellularia californica varietyUmbellularia californica var. californica (Hooker & Arnott) Nuttall Henk van der Werff Illustrated Treatment appears in FNA Volume2 KB (107 words) - 22:48, 5 November 2020
- pusilla (Hooker & Arnott) R. K. Jansen Syst. Bot. Monogr. 8: 46. 1985. John L. Strother Introduced Basionym: Spilanthes pusilla Hooker & Arnott J. Bot.2 KB (153 words) - 21:11, 5 November 2020
- Castilleja affinis var. contentiosa, Castilleja affinis var. neglecta Hooker & Arnott Bot. Beechey Voy., 154. 1833. J. Mark Egger, Peter F. Zika, Barbara5 KB (503 words) - 20:24, 5 November 2020
- Ribes californicum var. californicum, Ribes californicum var. hesperium Hooker & Arnott Bot. Beechey Voy., 346. 1839 ,. Nancy R. Morin Common names: Hillside4 KB (423 words) - 23:44, 5 November 2020
- Chaenactis douglasii var. alpina, Chaenactis douglasii var. douglasii (Hooker) Hooker & Arnott Bot. Beechey Voy., 354. 1839. James D. Morefield Common names: Hoary4 KB (310 words) - 19:29, 6 November 2020
- subfamilyMalvaceae subfam. Malvoideae genusAnoda speciesAnoda lanceolata Hooker & Arnott Bot. Beechey Voy., 411. 1840. Paul A. Fryxell†, Steven R. Hill Synonyms:3 KB (256 words) - 23:21, 5 November 2020
- Orthocarpus tolmiei subsp. holmgreniorum, Orthocarpus tolmiei subsp. tolmiei Hooker & Arnott Bot. Beechey Voy., 379. 1839. Kerry A. Barringer Endemic Treatment appears3 KB (234 words) - 19:15, 6 November 2020
- AL familyChenopodiaceae genusGrayia Show Lower Taxa Grayia spinosa Hooker & Arnott Bot. Beechey Voy., 387. 1841. Noel H. Holmgren Common names: Hopsage2 KB (213 words) - 22:59, 5 November 2020
- carinata Hooker & Arnott ex Torrey Ann. Lyceum Nat. Hist. New York 3: 349. 1836. S. Galen Smith IllustratedEndemic Basionym: Scirpus carinatus (Hooker & Arnott3 KB (302 words) - 21:39, 5 November 2020
- ericoides Lessing Linnaea 6: 117. 1831 Synonyms: Haplopappus ericoides (Lessing) Hooker & Arnott Haplopappus ericoides subsp. blakei C. B. Wolf Treatment appears in4 KB (331 words) - 21:06, 5 November 2020
- pharmacist and entomologist Basionym: Nuttallia Torrey & A. Gray ex Hooker & Arnott Bot. Beechey Voy., 336. 1839, Treatment appears in FNA Volume 9. Treatment4 KB (447 words) - 23:58, 5 November 2020
- LAYOUT:treatment:TUOYAL familyLiliaceae genusAllium speciesAllium falcifolium Hooker & Arnott Bot. Beechey Voy., 400. 1841. Dale W. McNeal Jr., T. D. Jacobsen IllustratedEndemic3 KB (324 words) - 22:15, 5 November 2020
- tribeBrassicaceae tribe Arabideae genusArabis speciesArabis blepharophylla Hooker & Arnott Bot. Beechey Voy., 321. 1838. Ihsan A. Al-Shehbaz IllustratedEndemic4 KB (384 words) - 23:32, 5 November 2020
- grossulariifolia Hooker & Arnott Bot. Beechey Voy., 326. 1838 (as grossulariaefolia) Synonyms: Malvastrum coccineum var. grossulariifolium (Hooker & Arnott) Torrey4 KB (325 words) - 23:22, 5 November 2020
- familySaxifragaceae genusLithophragma speciesLithophragma heterophyllum (Hooker & Arnott) Hooker & Arnott in J. Torrey and A. Gray, Fl. N. Amer. 1: 584. 1840 (as heterophylla)4 KB (349 words) - 23:41, 5 November 2020
- Ranunculus sectionRanunculus sect. Echinella speciesRanunculus hebecarpus Hooker & Arnott Bot. Beechey Voy., 316. 1838. Alan T. Whittemore Illustrated Treatment3 KB (215 words) - 22:51, 5 November 2020
- subfamilyPolygonaceae subfam. Polygonoideae genusAntigonon speciesAntigonon leptopus Hooker & Arnott Bot. Beechy Voy., 308, plate 69. 1838. Craig C. Freeman Common names:3 KB (297 words) - 23:07, 5 November 2020
- giganteum (Hooker & Arnott) Munz Aliso 4: 88. 1958. Frederick W. Case Jr. Endemic Basionym: Trillium sessile var. giganteum Hooker & Arnott Bot. Beechey3 KB (244 words) - 22:12, 5 November 2020
- (Gillies ex Hooker & Arnott) Lourteig Darwiniana 9: 465. 1951. Alan T. Whittemore Basionym: Ranunculus trisepalus Gillies ex Hooker & Arnott Bot. Misc.3 KB (218 words) - 22:45, 5 November 2020
- Jussiaeahexapetala hooker & Arnott Bot. Misc. 3: 312. 1833 Synonyms: J. repens var. major Hassler Ludwigia grandiflora subsp. hexapetala (Hooker & Arnott) G. L. Nesom6 KB (702 words) - 11:31, 9 May 2022
- macrourus (Rydberg) Jepson C. douglasii Rafinesque C. macrourus Nuttall ex Hooker & Arnott C. minutiflorus Rydberg C. montanus var. glaber (S. Watson) F. L. Martin6 KB (634 words) - 23:57, 5 November 2020
- laricifolius var. exilifolius, Penstemon laricifolius var. laricifolius Hooker & Arnott Bot. Beechey Voy., 376. 1839. (as Pentstemon) Craig C. Freeman Common4 KB (387 words) - 19:14, 6 November 2020
- Heliantheae) subtribe Madiinae genusLayia speciesLayia gaillardioides (Hooker & Arnott) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr4 KB (328 words) - 21:13, 5 November 2020
- genusMentzelia sectionMentzelia sect. Trachyphytum speciesMentzelia micrantha (Hooker & Arnott) Torrey & A. Gray Fl. N. Amer. 1: 535. 1840. Joshua M. Brokaw Common4 KB (377 words) - 20:15, 5 November 2020
- tribe Astereae genusCorethrogyne speciesCorethrogyne filaginifolia (Hooker & Arnott) Nuttall Trans. Amer. Philos. Soc., n. s. 7: 290. 1841. Staci Markos6 KB (331 words) - 20:58, 5 November 2020
- LAYOUT:treatment:TUOYAL familyPhrymaceae genusDiplacus speciesDiplacus nanus (Hooker & Arnott) G. L. Nesom Phytoneuron 2012-39: 29. 2012. Guy L. Nesom, Melissa C4 KB (400 words) - 20:30, 5 November 2020
- genusCeanothus subgenusCeanothus subg. Ceanothus speciesCeanothus integerrimus Hooker & Arnott Bot. Beechey Voy., 329. 1838. Clifford L. Schmidt†, Dieter H. Wilken4 KB (446 words) - 20:18, 5 November 2020
- endocarp, these are considered pseudodrupes, not true drupes. In Jodina Hooker & Arnott ex Meisner, the endocarp is apparently consumed during endosperm development3 KB (351 words) - 20:15, 5 November 2020
- chrysantha (Hooker & Arnott) Walpers Repert. Bot. Syst. 1: 118. 1842. Kingsley R. Stern Common names: Golden eardrops Basionym: Dielytra chrysantha Hooker & Arnott3 KB (366 words) - 22:45, 5 November 2020
- decorticans (Hooker & Arnott) Jepson O. boothii subsp. decorticans (Hooker & Arnott) Munz O. boothii subsp. rutila (Davidson) Munz O. decorticans (Hooker & Arnott)5 KB (367 words) - 11:33, 9 May 2022
- Myriophyllum brasiliense Cambessèdes M. proserpinacoides Gillies ex Hooker & Arnott Treatment appears in FNA Volume 10. Illustrator: Copyright: Herbs dioecious5 KB (508 words) - 11:31, 9 May 2022
- genusQuercus sectionQuercus sect. Quercus speciesQuercus douglasii Hooker & Arnott Bot. Beechey Voy. 9: 391. 1840. Kevin C. Nixon Common names: Blue oak4 KB (468 words) - 22:47, 5 November 2020
- Holostigma alyssoides (Hooker & Arnott) Hooker O. alyssoides var. villosa S. Watson O. boothii subsp. alyssoides (Hooker & Arnott) Munz O. gauriflora var5 KB (298 words) - 11:33, 9 May 2022
- subtribe Madiinae genusLayia speciesLayia heterotricha (de Candolle) Hooker & Arnott Bot. Beechey Voy., 358. 1839. Bruce G. Baldwin, Susan J. Bainbridge3 KB (301 words) - 21:13, 5 November 2020
- familyCyperaceae genusCarex sectionCarex sect. Racemosae speciesCarex gmelinii Hooker & Arnott Bot. Beechey Voy., 118, plate 27. 1832. David F. Murray Illustrated3 KB (227 words) - 21:42, 5 November 2020
- Jun). Habitat: Grassland, savanna with blue oak (Quercus douglasii Hooker & Arnott) or digger pine (Pinus sabiniana Douglas ex D. Don), usually in well-drained3 KB (265 words) - 22:14, 5 November 2020
- graciliflora Hooker & Arnott Bot. Beechey Voy., 341. 1839 Synonyms: Camissonia graciliflora (Hooker & Arnott) P. H. Raven Taraxia graciliflora (Hooker & Arnott)3 KB (297 words) - 11:33, 9 May 2022
- Maurandya stricta Hooker & Arnott Bot. Beechy Voy., 375. 1839 Synonyms: Antirrhinum hookerianum Pennell ex Millspaugh Asarina stricta (Hooker & Arnott) Pennell3 KB (236 words) - 20:28, 5 November 2020
- Heliantheae) subtribe Madiinae genusLayia speciesLayia glandulosa (Hooker) Hooker & Arnott Bot. Beechey Voy., 358. 1839. Bruce G. Baldwin, Susan J. Bainbridge4 KB (359 words) - 21:13, 5 November 2020
- ranges from southwestern Washington to central California; L. kunthii Hooker & Arnott is known only from central Chile (P. H. Raven 1963c). The species are3 KB (212 words) - 21:15, 5 November 2020
- heterophyllum var. scabrellum (Greene) Jepson Lithophragma scabrellum Hooker & Arnott Lithophragma scabrellum var. peirsonii Jepson Tellima heterophylla var4 KB (382 words) - 23:41, 5 November 2020
- subtribe Madiinae genusLayia speciesLayia hieracioides (de Candolle) Hooker & Arnott Bot. Beechey Voy., 358. 1839. Bruce G. Baldwin, Susan J. Bainbridge4 KB (323 words) - 21:13, 5 November 2020
- parviflora Nuttall ex Hooker & Arnott Bot. Beechey Voy., 338. 1839 Synonyms: H. fusca subsp. parviflora (Nuttall ex Hooker & Arnott) D. D. Keck Potentilla6 KB (620 words) - 23:56, 5 November 2020
- cespitosa subspeciesOenothera cespitosa subsp. marginata (Nuttall ex Hooker & Arnott) Munz in N. L. Britton et al. N. Amer. Fl., ser. 2, 5: 101. 1965. (as6 KB (457 words) - 11:31, 9 May 2022
- Basionym: Malva malachroides Hooker & Arnott Bot. Beechey Voy., 326. 1838 Synonyms: Hesperalcea malachroides (Hooker & Arnott) Greene Sidalcea vitifolia A4 KB (398 words) - 23:22, 5 November 2020
- hederacea Douglas M. sulphurea Gillies ex Hooker & Arnott Malvastrum sulphureum (Gillies ex Hooker & Arnott) Grisebach Sida hederacea (Douglas) Torrey4 KB (320 words) - 23:21, 5 November 2020
- LAYOUT:treatment:TUOYAL familyRanunculaceae genusEnemion speciesEnemion occidentale (Hooker & Arnott) J. R. Drummond & Hutchinson Bull. Misc. Inform. Kew 1920: 160. 19203 KB (209 words) - 22:47, 5 November 2020
- speciesCeanothus oliganthus varietyCeanothus oliganthus var. sorediatus (Hooker & Arnott) Hoover Leafl. W. Bot. 10: 349. 1966. Clifford L. Schmidt†, Dieter H3 KB (217 words) - 20:15, 5 November 2020
- lasiophyllus (Hooker & Arnott) Payson Ann. Missouri Bot. Gard. 9: 303. 1923. Ihsan A. Al-Shehbaz Basionym: Turritis lasiophylla Hooker & Arnott Bot. Beechey8 KB (549 words) - 23:30, 5 November 2020