Leaflets an inch or more in length, conspicuously fringed with spinulose-se-
taceous teeth. Heads an inch m diameter. Teeth of the calyx shorter than
the tube, unequal, spiny . Corolla slender, purple. Legume 2-seeded.—We
have only examined cultivated specimens : in these the leaflets are almost
lanceolate or oblanceolate.
sPV^u\osum' (Dough): prostrate, glabrous; leaflets oblong, acute at
each end, spmulose-denticulate, terminated by a rigid spiny point; stipules
ovate acuminate, spmulose-serrate; involucre laciniately many-cleft, shorter
than the subglobose heads; teeth of the calyx narrowly subulate, pungent
t t n e f e i n shor,te5 th^ l,he corofla (corolla white,tipped with fine purple).—Hook. Ji. Bor.-Am. 1. p. 133. the keel and wings
*■ triste: leaflets oblong-cuneiform ; corolla dull purple.—T. triste, Nutt. !
“ near springs, in mountain vallies, forming a dense short sward ;
w l l lerbT | trefRn'ld t0 eise by deer and horses.” Douglas, in
Hook 0. St Barbara, California, Nutt all /-Sm aller and more slender
than the preceding species. Teeth of the calyx 3 or 4 times the length of
the tube, setaceous. Legume 2-seeded. ■#
25. T. heterodon: decumbent, glabrous; leaflets oblong or oval, somewhat
cuneiform at the base mucronately ciliate-serrulate, obtuse, the lowermost
mostly emarginate; stipules membranaceous, ovate, acuminate, laciniately
serrate with subulate teeth, the lower ones lanceolate and often nearly entire •
W i U?pptLaC1f y ,many-cleft! mu°b shorter than the (large) hemispherical
of *he c*1yx «arrow y subulate, nearly equal, longer than the tube,
much shorter than the corolla; legume 3- 6-seeded.
a. teeth of the calyx entire; the two upper ones united a little highest.—T
atropurpureum, Nutt.! mss.
rJ s lower teeth of the cal>'2 setaceously 2-3-cleft. T. calocephalum, Nutt.!
y. teeth of the calyx usually all deeply and unequally 2- 3-cleft • the segments
setaceous. 1 ’ a
Oregon and California. a. Borders of marshes near the mouth of the
Oregon, Nuttall Dr. Scouler! 0. St. Barbara, Douglas! Nuttall! Y.
California, Douglas ! June.—2f Stems several from one root, 10-18 inches
Toffl ®™ple.or a. llttle branching, usually producing only terminal heads.
Leaflets i 1 inch in length, very finely and sharply serrulate. Heads an inch
or a little more, m diameter depressed, on slender peduncles. Flowers lar°-e’
rather dark purple ; the vexillum paler at the tip. Calyx-teeth a little spreading.
Ovary somewhat stipitate.—We have long possessed specimens of this
species collected by Dr. Scouler (as well as the various forms from Douglas
s collection), but we do not find it described in Hooker’s Flora. 26
26. T. inrolucratum (Willd.): nearly erect, glabrous; leaflets narrowly
lmear-lanceolate, mucronate, spinulosely serrulate; stipules membranaceous
oblong-ovate, anstate, the upper ones pectinately dentate with setaceous teeth ’
the lowermost narrower and nearly entire; involucre' laciniately many-cleft
a little shorter than the rather loose subhemispherical heads; teeth of the
calyx much shorter than the tube, subulate from a very broad base, pungent
entire or often 1-toothed at the base on each side, a little shorter than the
corolla; legunae dehiscent, 1-2-seeded.— Willd. sp. 3. p. 1372?; Smith In '
Rees, cycl ; Hook.! fl. Bor.-Am. 1. p. 133, not of Kunth, & DC. T. win-
1070™’ ®Pren° ' syst' P' • T • tridentatum, Lindl. hot. reg. sub t.
0. leaflets of the lower leaves linear, entire.
Diy gravelly soils, California, Menzies, Douglas! and from the mouth of
the Oregon to the Rocky Mountains, Douglas, Nuttall!—fl) Plant slender
branching from the base, the divisions 10-18 inches high, slender, scarcely
branched. Leaflets 1-1 j inch in length ; the petioles rather longer than the
leaflets. Heads 6-8 lines in diameter, 12-18-flowered, on slender peduncles,
fi lowers purple, tipped with white.
27. T. aciculare (Nutt, mss.) : “ erect, branching from the base ; leaflets
narrowly lanceolate-linear, acute, spinulosely and closely serrulate; lower stipules
.entire, acuminate, upper ones laciniate; involucre many-cleft, somewhat
shorter than the globose head; flowers reflexed; teeth of the calyx simple
(or rarely toothed at the base), subulate, as long as the tube, rather shorter
than the corolla; legume linear-oblong, 2-seeded.
“ Plains of St. Barbara. March-April.—(T) Rather tall; stem terete. Leaflets
about 2 inches long, the upper ones on shortish petioles. Peduncles 3-4
inches long. Calyx at length nearly campanulate, with long pungent teeth.
Corolla brownish-red.—Nearly allied to T. tridentatum.” Nuttall.
28. T. polyphyllum (Nutt, mss.): “ somewhat erect, glabrous; leaflets
3-5, lanceolate-linear, spinulosely serrulate.; stipules acuminate, laciniate
and spinulose; involucre many-cleft, somewhat shorter than the subglobose
head; teeth of the calyx rather broadly subulate, pungent, about the length
of the tube, and rather shorter than the abbreviated corolla ; legume 2-seeded.
“Woods around St. Barbara, Upper California. April.—(T) Resembles
the preceding, but the flowers are smaller and the leaflets longer and more
numerous (sometimes as many as 6).” Nuttall.—We have seen no specimens
of this and the preceding species : they seem to be very near T. involu-
cratum. ,
29. T. pauciflorum (Nutt.! mss.) : “ glabrous, nearly erect, slender much
branched from the base ; lower leaflets cuneate-oblong; upper ones lanceolate
linear, acuminate, distantly and minutely spinulose-serrulate; stipules
laciniate, acuminate; involucre many-cleft, much shorter than the small few-
flowered head; teeth of the calyx simple, broadly subulate, pungent, scarcely
longer than the tube, and shorter than the corolla; legume 2-seeded.
“ Wet places on the higher plains of the Oregon, particularly abundant
nearly the outlet of the Wahlamet. April-May.—(I) Stem about a foot high,
sometimes sparingly branched above, as well as. from the .base. Petioles”of
the lower leaves very long: the uppermost short. Lowest leaflets obovate,
obtuse or emarginate ; upper ones 8-10 lines long,, and about 1J lines wide.
Stipules rather small. Involucre 12—16 parted, about one-third the length of
the flowers. Heads 5-7-flowered, on long filiform (often axillary) peduncles.
Lower part of the corolla dull purple; upper part whitish.”
30. T- fucatum (Lindl.) : glabrous, acending; leaflets roundish-cuneiform,
sharply denticulate, rather thick; stipules (large) scarious, ovate, entire, mucronate
with a long point; peduncles mostly longer than the leaves; involucre
scarcely half the length of the somewhat hemispherical, few-flowered
heads, 9:cleft; the segments ovate, acuminate, entire; calyx many times
shorter than the corolla; the teeth triangular, acute, unequal, about the length
of the tube; wings, as long as the vexillum; legume stipitate, 5- 8-seeded.—
L in d l.! hot. reg. t. 1883.
California, Douglas !—(l) Heads 1-2 inches in diameter. Flowers cream-
color mixed with red. Peduncles axillary.
31. T. amplectens: glabrous, erect, branching: leaflets obovate-cuneiform,
mucronately denticulate; stipules ovate, scarious, entire, aristate-mucronate;
peduncles shorter than the leaves; involucre about half the length of the 5- 6-
flowered head, 4-5 parted; the segments somewhat lobed, obtuse ; calyx much
shorter than the corolla, cleft almost to the base; the teeth subulate, very unequal
; vexillum free, covering the wings; legume sessile, 6-seeded.
California, Douglas!—Plant 4-6 inches high. Leaflets very small on
slender petioles. Peduncles axillary. Head less than half an inch diameter.