TrifoUum.] LEGUMINOSiE. , I33 



F 



- 9. T. fimhr latum; prostratum, glabrum, foliolis oblongis subcuneatisve spinuloso- 

 denticulatis, stipulis ovato-acuminatis laciniato-spinulosis, involucro monophyllo laciniato- 

 multifido capitulis subglobosis breviore, dentibus calycinis luto-subuktis rectis corolla 

 subdimidio brevioribus. — Lindl. in BoL Reg, t 1070. 



Had. First detected by Mr. Menzies in California, (in Herb, nostr.) Common in tbe salt-marshes of the 

 North -West coast of America, from Cape Orford to Puget Sound. Douglas; Dr. Scouler. — Flowers purple, 

 the vexillurn paler than the rest of the corolla. 



10. T. spinulosum; prostratum, glabrum, foliolis oblongis utrinque acutis spinuloso- 

 denticulatis spinulaque rigida terminatisj stipulis ovato-acuniinatis bpliiuloso-surratis, 

 involucro monophyllo laciniato-multifido capitulis subglobosis breviore, dcntibtis 

 calycinis angusto-subulatis pungcntlbus rectis corolla paulo brevioribus. — Douglas, MSS, 

 in Herb, Hort. Soc, 



Had. Very common near springs, in the vallies between SpoJuin and Kettle Fallst North-West America. 

 DongUis. — This is, as Mr. Douglas observes, " allied to T. Jimbriatitmy but sufficiently distinct. The 

 vexiUian and aim are shorter and more acute; the flowers smaller, white; the carina and al(t tipped with a 

 fine purple, and the whole plant more slender. It is abundant in the fertile alluvial soils of the mountaiu- 

 vallies, forming a dense, short sward. It might prove, perhaps, very useful as a clover, the herbage being 

 extremely nutritive, and preferred to every thing else by deer and horses." 



11. T, involucratum ; glabrum, suberectum, vix ramosum, foliolis lineari-lanceolatis 

 mucronatis spinuloso-denticiilatis, stipulis lanceolatis acuminatissimis siJimdoso-.serratis, 

 involucro monopliyllo laciniato-multifido capitulis subliemisphasricis laxifloris breviore, 

 calycibus tubulosis, dentibus brevibus rectis lanceolatis cuspidato-pungeutibus corolla 

 paulo brevioribus nunc utrinque basi unidentatis. — Willd, Sp, PL p. 1372, (non Kunth,) 

 Smithy in Rees' CycL n, 28. — -T. Willdenovii. Spr, — T. tridentatum. Lindl, in Bot Mag* 

 sub t 1070. 



Had. Specimens in my Herbarium, gathered by Mr. Menzies, are marked " California." Abundant in 

 North -West America, from the mouth of the Columbia to its source in the Rocky Mountains, on dry gravelly 

 soils, — This is unquestionably tbe T. involucratum of Smith, and, as far as can be judged from the description, 

 of Willdenow also ; but the species so named by Kunth is w idely different, having much larger corollas, 

 long setaceous teeth to the calt/Xj and being, as that author remarks, allied in habit to T, alpinum. In many 

 specimens that I have examined, both from Mr. Menzies and Mr. Douglas, (those from the latter both wild 

 and cultivated,) I find the teeth of the calyx generally simple; sometimes some of the teeth, rarely all, have a 

 smaller tooth on each side at the base, hence becoming tridentate. Our plant is very erect and slender in 

 its mode of growth, and remarkable for the great length of the tube of the calyx in proportion to its teeth. 

 The legume is oblong, two-seeded, and bursts spontaneously and for its whole length, even while yet sur- 

 rounded by the floral coverings. 



12. T, cyathifenim ; prostratuni, ramosum, glabrum, foliolis oblongis obovato-cuiieatisve 

 mucronatis spinuloso-dentatis, involucro (magno) monophyllo cyathiformi brevitcr mul- 

 tifido dentato inter venas transversim rugoso capitulis liemispha;ricis multifloris sub- 

 breviore, calycibus oblongis subiuflatis membranaceis dentibus setaceis tri-multi])artitis 

 corollam aquantibus. (Tab. L.) — LindL in Bot Reg. sub t 1070, 



Radix i)arva, annua, subfusiformis, fibrosa. Caulcs prostrati, glabri, ramosi, pedales ad sesquipedalem. 

 Folia sublonge petiolata, trifoliolata, ghjhra, foliolis nunc oblongis basi subattenuatis, uuuc obovato-cuneatia 



