13 
3. C. incana L. Pubescent, more erect and usually much larger and somewhat 
woody: leaflets obovate or oval, hairy beneath or glabrate; stipules minute, de- 
ciduous: racemes few to many-flowered : pod subsessile, oblong, pendulous, pilose 
with spreading hairs, 24 to 36 mm. long.—A Mexican and West Indian species, found 
by Nealley in the vicinity of Brazos Santiago. The Texan specimens are low and 
with very villous-hirsute stems. 
4. LUPINUS L. (Lupine.) 
Herbaceous annuals or perennials, with palmately 1 to 16 (5 or 7 
in ours)-foliolate leaves, racemes of blue or purple flowers, a deeply 
2-lipped calyx, a broad standard with sides reflexed, monadelphous 
Stamens with dissimilar anthers, and a flat coriaceous pod. 
1. L. subcarnosus Hook. Rather stout, 3 dm. high, silky-pubescent: leaflets 5, 
cuneate-obovate, acute or rounded or retuse at apex, usually glabrous above, 2 to3.5 
cm. long, the petioles 2 to 3 times longer: racemes 5 to 7.5 cm. long, with scattered 
flowers, elongating in fruit: petals blue, 8 to 10 mm. long, the standard with a white 
or yellow center: pod3.5 cm. long, 4 to 6-seeded. (Including L. Texensis Hook.)—The 
common lupine of southern and western Texas, “ covering fertile slopes with a 
carpet of purple blue” (Havard), as early as March. 
2. L. Havardi Watson. Apparently perennial, the herbaceous stems 3 to 4.5 dm. 
high, leafy, at length branched, loosely appressed silky-villous throughout: leaflets 7, 
oblanceolate, glabrous above, 8 to 20 mm. long, short-petioled: racemes elongated : 
petals purple, with a light spot on the standard, 12 mm. long: pod narrowly linear, 
2.5 to 3.5 cm. long, 6 to 8-seeded.—Hills near Presidio, western Texas, 
5. MEDICAGO Tourn. (MEDICK.) 
Annual or perennial herbs, with pinnately 3-foliolate leaves, toothed 
leaflets, small flowers in spike-like racemes, and curved or coiled 1 to 
few-seeded pods. 
1. M.sativa L. (Lucerne, ALFALFA.) Upright and smooth perennial : leaflets 
obovate-oblong: flowers purple, racemed : pod spirally twisted.—An extensively cul- 
tivated forage plant, which has long been an introduced plant in southern and west- 
ern Texas. 
2. M. maculata Willd. (Sporrep MEDICK.) Spreading or procumbent annual, 
somewhat pubescent: leaflets obcordate, with a purple spot, minutely toothed: pe- 
duncles 3 to 5-flowered: flowers yellow: pod compactly spiral, of 2 or 3 turns, com- 
pressed, furrowed on the thick edge and fringed with a double row ofcurved prickles.— 
Said to be introduced in the San Antonio Valley. 
3. M. denticulata Willd. Nearly glabrous: pod loosely spiral, deeply reticulated, 
and with a thin-keeled edge, otherwise like the last.—Naturalized in western Texas. 
6. MELILOTUS Tourn. (Menitor. Swrer CLOVER.) 
Annual or biennial herbs, with pinnately 3-foliolate leaves, usually 
serrulate leaflets, small yellow or white flowers in slender axillary pe- 
dunculate racemes, and an ovoid coriaceous wrinkled pod which is 1 or 
2-seeded and scarcely dehiscent. 
1, M. Indica All. Smooth and erect, often 6 to 9 dm. high, branching: ieaflets 
mostly cuneate-oblong, obtuse, denticulate, 2.5 cm. or less long: flowers yellow, 2mm. 
long, nearly sessile. (M. parviflora Dest.)—Naturalized along the southern border of 
Texas. 
