134- LEGUMINOSiE. [Hosackia, 



Tel fere obcordatis, mucronatis, spiuulosO'deatlculatis. Stipulm ovatae, acumioatse, reticulatie, basi raem- 

 branaceie, albidie, mar^nne spinuloso-laciniatae. Pedunculi laterales, terminal esque digitem longi. Involucrum 

 ma^unij cyatbiforme sen bemispbsericum, membranaceum, venosum, intra venas transversim rugosum, pallide 

 viride, basi albida, margine multifido, segraentia brevibus latis subtriangularibns inaequaliter denticulatis. 

 Capitula hemisi)hierica, compacta, multiflora, vix involucro longiora. Calyx oblongus, membranaceus, 

 scariosus, alius, minutissime reticulatus atque vcnosns, subiuflatns, dentibus corollam sequantibns, setaceis, 2 

 superioribus brevioribus, ^-3-partitis, 2 lateralibus 3-partitis, inferiore rcliquis longiore 3-partito, laciniis 

 trifidis, segmentis omnibus magis minusve patentibus. Corolla pallide rosea. Vexillum oblongum basi 

 latum, vix unguiculatum, rectum, liberum. AltB vexillo vix breviores; Carina staminaque in unum corpus 

 coalita. Gormen oblongum : Stylus filifonnis. Legumen oyali-oblongum, compressum, dehiscens, dispermum. 

 Semina subrotunda, compressa, Isevia. 



Hab. Moist Tallies in the interior of Nortb-West America, borderiug upon the Columbia. Douglas. — 

 This is one of the most curious and elegant of the genus. The involucre, in size, colour, and texture, 

 resembles that of Astraittia, but is formed of one entire piece or cup, in which the flowers are almost wholly 

 imbedded. The corolla is very short, and the vexillum quite free from adherence with the other petals. 



Tab. L. Fig. 1 , Back Tie w of a flower ; Jig, 2, Front view of do. ; Jig. 3, Calyx laid open j Jig, 4, Legmnen ; 

 Jig. 5, Seed : — magnijzed. 



6. HOSACKIA. Benth, 



Cal, campanulatus, 5-fidus. AlcB vexillum subaequantes patentes. Carina rostrata. 

 Stylus filifonnis. Stigma capitatum. Legunien cylindraceum, v. subcompressum, rectum, 

 Igeve. — Herbae, foliis impari-pinnatis {rarius simplicibusy H,\ foliolis scepius alternis, 

 stipulis membranaceis minutis aut ohsoletis. Benth. 



1. H, bicolor ; glabra, decumbens, foliolis suboppositis 7-9 oblongis obovatisve, stipulis 

 cordato-ovatis membranaceis obtusissimis, floribus umbellatis, bractea monophylla vel 



nulla. Douglas^ MSS. — Benth* in Bot Reg. t* 1257. — Lotus pinnatus. Hook, in Bot. Mag. 

 t 2913. 



Hab. Frequent in low alluvial soils between Fort -Vancouver and the Grand Rapids on the Columbia, 

 and also near the base of Mount St. Helen, in similar situations. Douglas. — Neither my dried specimens, 

 nor the recent cultivated ones, which I have examined, exhibit such remarkably patent alee as are figured on 

 this plant in the Botanical Register, perhaps because they were not fully expanded. I willingly, however, 

 follow my valued friend, Mr. Bentham, in considering the genus to be distinct from Lotus. But if I am 

 correct in referring my fourth species to it, the leaflets are sometimes reduced to a single one ; while in the 

 H. Purshiana, Benth. (Lotus sericeus, Pursb ; Trigonella Americana, Nutt.) according to my authentic 

 specimens from Mr. Nuttall, there are constantly three leaflets to each leaf, as in Lotus there are spurious 

 spongy dissepiments between the seeds. T\i&Jiowers are yellow, except the aim which are white and waved. 



2. H. decumbens ; pubescenti-hirsuta, decumbens, foliolis alternis 4-5 ovali-subcuneatis 

 acutis, stipulis minutissimis acutis deciduis, floribus umbellatis, bractea 1 -3-foliolata. — 

 Benth. in Bot. Reg. sub t. 1257. — Lotus incanus. Douglas, MSS. 



Hab. Plentiful on gravelly soils near the mouth of the Columbia, at Fort -Vancouver. Douglas; 

 Scouhr; and on the banks of the Multnomak, Douglas. — This throws out numerous stems from the root, 

 which are one and a half to two feet long, bearing many umbels of flowers, which are wholly yellow. The 

 al(B are even, and narrower than in the preceding species. 



3. H. parvijiora ; erecta, glabra, basi priecipue ramosa, foliolis alternis 4-6 oblongo- 



