Spilanthes. composite. 357 



sippi ! Arkansas! and Texas! Aug.-Oct. — Stems 1-2 feet long. Leaves 

 2 inches or more in length, one or more wide, veiny. Rays yellow, varying 

 from a fourth to fully half an inch in length, usually 10 or 12. Disk when 

 mature fully half an inch long. Achenia of the ray somewhat triangular- 

 obcompressed, otherwise similar to those of the disk ; the innermost often 

 smooth, at least when young ; but all distinctly, although not very stongly 

 ciliate. 



S. Pscudo-AcriicUa (Linn.) is cited as a Califomian species, with a mark of dovibt, 

 in the Botany of Beechey s Voyage (p. 150), on the authority of a very imperfect 

 specimen in the collection from California, made during that voyage. 



108, LIPOCH^TA. DC. prodr. 5. p. 610. 



Heads many-flowered; the ray-flowers ligulate, in a single series. Invo- 

 lucre ovate or campanulate ; the scales oval, appressed, in 2-3 series. Re- 

 ceptacle flattish ; the chaff" membranaceous, clasping the flowers. Branches 

 of the style in the disk-flowers appendiculate at the summit. Achenia of 

 the ray 3-sided, scarcely or somewhat winged, each angle produced into a 

 persistent awn, and with a few setiform [or chaffy] teeth between the awns ; 

 of the disk compressed. 1-2-awned, the inner margin slightly winged. — 

 Suffruticose or herbaceous plants [chiefly natives of Mexico and the Sand- 

 wich Islands], with the habit of the opjiosite-leaved Verbesinse. Leaves 

 opposite, sessile, or on short petioles, ovate-lanceolate, somewhat serrate, 

 triplinerved. Heads pedicellate, either solitary or corymbose. Flowers 

 yellow. DC. 



§ Achenia of the ray 3-, of the disk mostly 2-awned {the awns slender 

 and upwardly scabrous), with a fexo intermediate chaffy teeth or scales, 

 more or less united with each other and vnth the base of the awns. — Cato- 



MENIA. 



1. L. Texana: suffruticose; branches terete; leaves sessile, triplinerved, 

 rhombic-ovate, the uppermost ovate-lanceolate, rather acute, strigose above, 

 villous-hirsute beneath, sparingly and remotely serrate, mostly 2-angled or 

 2-lobed near the middle, cuneiform at the base ; peduncles solitary, naked, 

 slender ; scales of the canescent campanulate involucre in 2 series, nearly 

 equal in length ; the exterior lanceolate, somewhat foliaceous ; the interior 

 with scarious margins; ovaries narrow, crowned with 2-3 setiform awns, and 

 a few short hyaline denticulate-lacerate scales, all more or less united at 

 the base. 



Texas, Dr. Riddell ! — Plant hairy and scabrous ; the young branches, 

 lower surface of the leaves, peduncles, &c. somewhat canescent with ap- 

 pressed hairs. Leaves 1-2 inches long, slightly hastate-lobed or angled; 

 the scabrous hairs of the upper surface arising from impres.sed tubercles. 

 Involucre about the length of the disk, appressed. Rays 7 or 8, narrowly 

 oblong, minutely 3-toothed at the summit, 5-6 lines long, orange-yellow in 

 the dried state. Corolla of the disk yellow, witli a slender tube, and an elon- 

 gated slightly dilated 5-toothed limb ; the teeth jjuberulent externally. An- 

 thers brownish, tipped with yellowish triangular appendages. Branches of 

 the style (in the disk) terminated with long and acute linear-subulate hirsute 

 appendages. Ovaries of the ray triangular, somewhat pubescent; of the 



