PRIFOLIUS, LEGUMINOS. « | 135 
pods 1-2-seeded, a little longer than the calyx, dehiscent. Along streams 
and ditches, Siskiyou Mountains, Oregon and northern California. 
* * * * Peduncles axillary: flowers on slender pedicels, soon re- 
flexed: ovules 2-4: spreading perennials. 
T. Breweri Watson |. c. xi, 131. Somewhat pubescent throughout, 
stems procumbent, very slender, 4-12 inches long, from a rather thick 
- perennial root: stipules lanceolate, short; leaflets obovate to oblong, 
mostly retuse, toothed or serrulate, 3-9 lines long: ’ flowers white or pink- 
ish, on slender pedicels, in loose globose heads: calyx very narrow, the 
slender teeth much shorter than the corolla. In moist places, south- 
western Oregon and northern California. 
T. REPENS L. Sp. 1080. (Wuirr CLover). Glabrous perennial; stems 
slender, creeping, rooting at all the nodes, 4-20 inches long: leaves long- 
petioled; stipules narrowly lanceolate, scarious; leaflets obcordate, den- 
ticulate, 4-10 lines long: flowers white or pinkish, in loose depressed-glo- 
hose long-peduncled heads, soon reflexed; teeth of the calyx unequal, 
lanceolate-subulate, shorter than the tube: pods 4-seeded. Common in 
cultivated fields and roadsides. Introduced from Europe. 
* * * * * Peduncles axillary: flowers on short pedicels, in small 
heads, at length reflexed: teeth of the calyx subulate, mostly glabrous: 
slender annuals. 
T. ciliolatum Benth. Pl. Hartw. 304. T. ciliatum Nutt. not Clark. 
Glabrous; stems erect, often 1-2 feet high, simple or branched: stipules 
usually narrow, acuminate; leaflets cuneate-oblong to obovate, 6-12 lines 
long, obtuse or retuse, serrulate: flowers in small dense ovate heads, the 
rachis prolonged above as 2 stout bristle: calyx campanulate, the teeth 
very unequal, the two upper ones lanceolate, spinulose-acuminate, longer 
than the corolla, the others similar but smaller, about two-thirds as long, 
all with searious and rigidly ciliolate margins; petals purple and white, 
3-4 lines long, the upper one free and folded around the others: pods 
shorter than the calyx, I-seeded; seeds oblong, turgid, light brown. In 
moist meadows of the Willamette Valley to California. 
T. Hallii. 7. gracilentum and bifidum of authors as to the Oregon plant 
not T.& G. Subvillous to glabrous, pale green and somewhat glaucous: 
stems slender, diffusely branched to simple, 6-18 inches high from a slen- 
der annual root: stipules ovate-lanceolate, setaceous-acuminate, entire : 
_ leaflets linear-cuneate to obcordate, sparsely dentate, more or less deeply 
notched at the apex, the midnerve‘excurrent in the centre, 4-8 lines long: 
peduncles exceeding the leaves, pilose near the summit; flowers pink or 
rose-color, in small depressed-globose 10-30-fllowered heads, on short pedi- 
cels, soon reflexed; calyx 5-parted, the teeth subulate-setaceous, sparsely 
hirsute, somewhat unequal, but little shorter than the corolla; petals rose- 
color, 3-4 lines long, the upper one free and folded over the others: pods 
included, 1-seeded. Open places and prairies, western’ Washington to 
California. 
T. procuMBENS L. Sp. 772. Pubescent; stems procumbent to sub-erect, 
slender, 4-12 inches long: leaves short-petioled, pinnately-trifoliolate ; 
stipules rather foliaceous, ovate, ciliate, mostly shorter than the petiole; 
leaflets cuneate-obcordate or cuneate-oblong and emarginate, denticulate, 
the lower pair distant from the terminal one: flowers on. slender axillary 
peduncles, in small ovate heads, soon reflexed; teeth of the calyx un- 
equa!, the two upper ones very short; petals yellow, the upper one striate 
when old: pods l-seeded. Common in fields and.roadsides.. Introduced 
from Europe. * . : 
§ 3.. Invontcrartum T.& G. FI. i, 317. Heads of flowers sub- 
tended-by a’monophyHous, usually-many-cleft inyolucre.:. pedun- 
