lets | of an inch long. Peduncles and petioles stout. Flowers large, bright
purp e. Legume about f- of an inch long and 24 lines wide, somewhat compressed
contrary to the dissepiment, perfectly 2-celled.
+ Doubtful species.
40. A. miser (Dough) : stem weak; leaflets 5-10 pairs, linear, somewhat
pubescent; stipules acuminate; calyx blackish. Dougl. in Hook. fl. Bor.-
Am. 1. p. 153, note. J
Low hills of Spokan River, 60 miles from its confluence with the Oregon.
ay-June. Jjt Douglas.—Of this plant Mr. Douglas sent home no speci-
mens. Mr. Nuttall obtained what he considers the same species, but with-
out trim. I he following is the short description which he communicated to
us. y'00* ^ar^ e5 fusiform. Stem slender, almost prostrate, somewhat hir-
sute. Leaflets 7-8 pairs, obovate, acute. Stipules broadly ovate, united
opposite the leaves. Racemes few-flowered, about the length of the leaves.
racts minute. Calyx hirsute with blackish hairs 3 the teeth acute and short.
* lowers small, pale purplish.—Perhaps a Phaca.”
34. OXk TROPIS. DC. Astrag., prodA 2. p. 275.
Calyx 5-toothed. Keel with a subulate point. Legume partly 2-celled' by
the introflexion of the upper or placental suture.—Perennial (very rarely annual)
herbaceous or sometimes suffruticose plants, often acaulescent. Leaves,
unequally pinnate. Spikes pedunculate, axillary or radical.
§ 1 - Nearly stemless: stipules adnate to the petioles: leaflets not verticillate.—
Acaules, DC.
* Flowers purple or white. ■
1. 0 . borealis (DC.): nearly stemless; scape and stipules hispid with
bristly hairs; the petioles with few hairs; leaflets elliptical-lanceolate glabrous
beneath, hairy above; scapes as long as the leaves; flowers capitate*
bracts as long as the blackish very hispid calyx. DC. prodr. 2. p. 275 • Hook,
fl. Bor.-Am. 1. p. 145; Hook. Am. bot. Beechey, p. 122.'
/3. bracts foliaceous, longer than the flowers ; leaflets narrower. Hook d-
Arn. 1. c. 1 “
Kotzebue’s Sound, Beechey—The variety /?. will perhaps prove to be a
distinct species.
2. O. UralensisfDC.) : stemless, villous, scarcely silky ; leaflets oblonglanceolate
; scapes longer than the leaves, and (with the calyx) hirsute-wool-
ly ; heads many-flowered, ovate, the flowers spreading ; lower bracts longer
than the calyx, the others equalling it in length; legumes somewhat distant
erect, ovate, acuminate, 2-celled. DC. prodr. 2.p. 279; Hook.fl. Bor.-Am
l.p . 145; Nutt, in jour. acad. Philad. 7. p. 18, excl. syn. Astragalus’
Uralensis, Linn. ■
0. subsucculenta (Hook. 1. c.): leaves nearly glabrous and somewhat
fleshy.
r- minor (Hook. 1. c.) : somewhat glabrous; flowers few.
Arctic America and Labrador, Hooker. Head-Waters of the Missouri
Nuttall. P. Arctic sea-shoie, Dr. Richardson, y. Dry hills and prairies of
the Rocky Mountains, Drummond.—A very variable species. Hooker.
3. O. arctica (R. Brown) : nearly stemless, silky; leaflets opposite and alternate,
oval-oblong; heads few-flowered, the flowers somewhat umbellate;
legumes erect, oblong, acuminate, and (with the calyx) clothed with black
hairs. R. Br.—Hook. ! fl. Bor.-Am. 1. p. 146.'
a. subumbellata (Hook.! 1. c.) : heads2-4-flowered.—O. arctica,/?. B r .! in
■app. Parry's 1st voy. p. 278; DC. prodr. 2. p. 276.
0. minor (Hook.! 1. c.) : densely silky ; flowers solitary.
y. inflata (Hook! 1. c.): leaves and inflated legumes somewhat glabrous.
a. & 0 . Arctic islands and shores! y. Highest summits of the Rocky
Mountains.—Probably, as Hooker suggests, not distinct from the preceding
species.
4. O.foliosa (Hook.) : stemless, canescently hairy; leaflets numerous, approximated,
ovate or oblong-ovate, rather acute ; scapes longer than the leaves,
hairy; heads broadly ovate (small); flowers crowded, spreading, the lower ones
reflexed ; bracts linear-lanceolate, shorter than the calyx ; legumes rather remote,
deflexed, cylindrical, acute, clothed (as well as the calyx) with blackish
hairs. Hook. ! fl. Bor.-Am. 1. p. 276.
Saskatchewan River! west to the Rocky Mountains, Hooker.—Leaves
3-4 inches long : leaflets 11-14 pairs, one-third of an inch long, clothed with
appressed hairs. Soape about as long as the leaves ; the pubescence spreading.
Teeth of the calyx nearly as long as the tube. “ Legumes about one
inch long: stipe short, included in the calyx.” Hook.
5. O. Lamberti (Pursh): ceespitose and stemless; leaflets numerous [5-8
pairs], linear-lanceolate, strigose, rather remote; common petiole very long;
scape longer than the leaves; spikes oblong; bracts lanceolate, shorter than
the silky calyx. Nutt.—Pursh, fl. 2.p. 740; Nutt. ! gen. 2,p. 98; DC.prodr.
2. p. 277.
0. silky-pilose ; leaflets 10-14 pairs, lanceolate; hairs of the calyx partly,
and of the sheathing stipules wholly, dark.—O. Lamberti 0. Hook.! fl. Bor-
Am. 2- p. 147.
y. flowers larger, more remote, spreading.—O. Lamberti, Sims, bot. mag. t.
2147; Lindl. bot. reg. t. 1054. O. Lamberti a. Hook. 1. c.
5. ? lanceolate leaflets (6-9 pairs) and stipules much less hairy ; heads few-
flowered, the flowers partly spreading; calyx with a mixture of blackish
hairs.
£. very dwarf, canescently woolly; the leaflets shorter and about 5 pairs; scape
scarcely longer than the leaves ; flowers capitate or nearly so ; calyx densely
woolly ; bracts small and short; wings emarginate.—O. Lamberti 0
leucophylla, Nutt. mss.
Woodless hills of the Missouri, from the Platte to the mountains, Nuttall!
Dr. James ! 0. Saskatchawan ! to the Rocky Mountains, Douglas, Drummond.
y. Canada (Hook.) <S. near Quebec, Mrs. Percival! e. Plains of
the Platte, Nuttall. May .-June.—Flowers bright purple.—Allied to O.
grandiflora and O. ambigua, and not far removed, as Hooker thinks, from
some slates of O. Uralensis. We have not seen the mature legumes. According
to Nuttall they are glabrous, black, small,^somewhat terete, acuminate,
and partly 2-celled.
6. O. sericea (Nutt. 1 mss.): “ stemless, somewhat csspitose, shining and
whitish with appressed silky hairs; leaflets linear-oblong or lanceolate (those
o f the primary leaves elliptical and obtuse) ; scapes longer than the leaves;.
spikes short, elongated in fruit; bracts lanceolate, acuminate, shorter than
the calyx; teeth of the calyx short and subulate; legumes somewhat cylindrical,
acuminate, 2-celled, canescently pubescent.”
Rocky Mountains. Nuttall!—Leaflets about f of an inch long. Wings
emarginate. Scapes stout and rigid in fruit. Legumes (including the beak)
nearly an inch long, coriaceous, compressed contrary to the sutures.—Nearly
related to O. Lamberti,