6574. BI§£RUI.A L. 
(DC. Prodr. 11. 307.) 
Astrag^aleae dulbiae* 
0575. Ko]nA]:.oBij§ mtt. 
(Nult. in Torr. et Gr. Fl. N.' Am. I. 350.) 
Sectio I. ERVOIDEAE Torr. et Gr. 
1. H. (OROBUS Nutt. Gen. 11. 95. - DC. Prodr. 11. 380.) DISPAR Nutt. mss. 1. c. - 
Decumbens, puberulus: caule substriato glabriusculo ; foU. plerumq. sessilib., 
foliolis lineari-oblong. 5-10-jugis obtusis; stipulis ovat., inferiorib. connatis; ra- 
cemis multifloris laxis, plerumq. sessilib., quam folia parum longiorib. , saepe 
2-3 aggregatis; bracteis minutis, quam pedicelli breviorib.; leguminib, elliptico- 
oblongis obtusis planis substipitat., stipite calycem non excedente. — In „the 
Plalte near the Rocky mountains." 
2. H. MULTIFLORUS Torr. et Gr. L c. 351. f — Suberectus, adpresse-pubescens v. 
demum glabriusculus : caule minule striato; foliolis 6-10-jugis oblongis v. lineari- 
oblongis obtusis; stipulis parvis ovat,, inferiorib. coalitis; racemis plerumq. so- 
litariis pedunculat. multifloris laxis, demum folia superantib, ; bracteis minutissi- 
mis, quam pedicelli breviorib.; leguminib. lineari-oblongis acut. planis stipitatis, 
stipite calycem excedente, — Homalohus fPhaca Hook. FI. Bor, Am. I. 143.) ni- 
grescens Nutt, mss. — Ervum multiflorum Prsh. FI, II. 789, — Astragalus tenellus 
Prsh. 1. c. 473. ex p. — Missouri. 
Sectio II. GENISTOIDEAE Torr. et Gr. 
3. H. CAMPESTRIS Nutt. mss. 1. c. 351. f— Suberectus rigidus: ramis rigidis jun- 
ceis; petiolis semicylindraceis, apicem versus subdilatatis, inferiorib. foliola 3-5- 
juga rigida lineari-subulata sistentib,, superiorib. simplicib. v. trifoliolatis; sti- 
pulis Iriangulari-subulat., supremis brevissimis; racemis 5-10-floris laxis; calyce 
nigro-piloso-hirsuto, dentib, brevib. subulatis; leguminib. longis rectis pubes- 
centibus compressis. ■— In „the Colorado of the West". 
4. H, JUNCEUS Nutt, mss. 1. c. — Erectus gracilis ramosissimus : foll. radicalib. 
1-2-jugis, foliolis minutis; petiolis caulinis filiformib. aphyllis; stipulis late tri- 
angularib. minutis; pedunculis longissimis; florib. paucis remotisq,; bracteis sub- 
nullis; calycis dentib. brevib. obtusis; leguminib. longis rectis linearib. pube- 
rulis. — Rocky mountains. 
5. H, ORTHOCARPUS Nutt. mss. I. c. — Decumbens gracilis flexuosus, e basi ra- 
mosissimus: foll. inferiorib. 1-2-jugis, foliolis anguste linearib. angustissimis; 
foll. superiorib. simplicib. sessilib., foliolis inferiorib. similib.; stipulis minutis 
dilatatis; pedunculis quam folia longiorib, paucifloris; dentib, calycinis brevissi- 
mis acut,; leguminib. oblongo -linearib. strictiusculis coriaceis puberulis torulo- 
sis, 6-8-spermis. — Rocky mountains. 
6. H. DECUMBENS Nutt. mss, I. c, 352, — E basi ramosissimus difi^usus v. decum- 
bens gracilis: foliolis 3-5-jugis, plerumq. minutis, anguste lanceolato-linearib.; 
petiolis longis, saepe subdilatatis ; slipulis subulat. , inferiorib. ex parte coalitis; 
pedunculis longissimis; racemis laxis 5-10-floris; leguminib. planis linearib. 
elongat. falcatis puberulis. — In „the Colorado of the West". 
7. H. TENUIFOLIUS Nutt. mss. 1, c, — Humilis, e basi ramosus caespitosus: foliolis 
5-6-jugis angustissimis subulatis, rachide anguste alata; stipulis triangulari- 
acuminatis, infimis latiorib, membranaceis; pedunculis longissimis 5-8-floris; 
dentib, calycinis brevib. acutisq.; leguminib. brevib. planis, lineari-ellipticis stric- 
tis, puberulis, — Rocky mountains, 
Sectio III. DRABELLA Torr. et Gr. 
8. H. CAESPITOSUS Nutt, mss, I. c. f — FoU. simplicib. v, pinnatim-3-5-foIioIat,, 
lineari-lanceolatis v, oblongo-lanceolat, anguslis acutis, basi attenuat.; racemis 
laxis; bracteis lanceolato- subulat., pedicellos fructiferos subaequantib,; calycis 
dentib. subulatis, tubum subaequantib.; leguminib. oblongo-lanceolat. acuminat. 
planis, vix curvatis, demum glabris, sub-12-ovulatis. — Rocky mountains. 
