GREENMAN. — CENTRAL AMERICAN SPERMATOPHYTES. 41 
reticulated veins: heads 10 to 12 mm. high, about 3 cm. in diameter, 
terminating the stem and branches in a paniculate cyme: involucre 
campanulate, 3-4-seriate; bracts of the involucre lanceolate, acute, 
_ herbaceous-tipped and more or less squarrose, externally hispid-pubescent, 
ciliate: ray-flowers orange-yellow, 12 to 14: disk-flowers numerous; 
pappus of two caducous aristae with minute intermediate scales: achenes 
somewhat compressed laterally, oblique, 2 to 2.5 mm. long, black, 
glabrous. — Mexico, State of Morelos: near a 12 November, 
1902, C. G. Pringle, no. 11,295 (hb. Gr.). 
The rather strongly compressed achenes of the species here described 
suggests at first a generic affinity with ncelia, but the whole habit of 
the plant is that of a Vigutera ; and, moreover, its specific relationship 
seems to be with V. Palmeri, Gray, and V. urticiformis, Hemsl. From 
both of these species V. morelensis differs in having alternate leaves, and 
in having somewhat squarrose but not attenuated inyolucral bracts. z 
Perymenium (?) calvum, pn. sp. An herbaceous perennial: stems 
erect from a ligneous base, slender, about 1.5 dm. high, upwardly 
strigillose, purplish: leaves opposite, sessile, broadly ovate to ovate- 
lanceolate, 1.5 to 2.5 em. long, 0.8 to 1.6 cm. broad, mucronate-acute, 
shallowly dentate, appressed-hispidulous on both surfaces, slightly paler 
beneath: peduncles long and slender, 6 to 9 em. in length, appressed- 
hispidulous: heads about 1 cm. high, radiate: involucre 2-seriate; bracts 
of the involucre oblong-lanceolate, 8 to 9 mm. long, somewhat acuminate, 
acute, strigillose: ray-flowers 5 to 7, fertile; rays yellow: disk-flowers 
several : achenes of both ray- and disk-flowers bald, glabrous, those of the 
disk laterally compressed and sub-4-angled.— Mexico. State of 
Sinaloa: in the foothills of the Sierra Madre, near Colomas, 14 July, 
1897, Dr. J. N. Rose, no. 3225 (hb. Gr., and hb. U. S. Nat. Mus.). 
Notwithstanding the lack of pappus the plant here described is placed for 
the present at least in the genus Perymenium. In general habit it 
resembles P. tenellum, Gray. 
Helianthella iostephanoides, n. sp. An herbaceous perennial : 
stems 5 to 7 dm. high, erect, ‘simple below, branched above, striate, 
reddish-brown, hirsute-pubescent with spreadiug or subappressed usually 
jointed hairs: leaves chiefly basal, oblong to lance-oblong, 1 to 1.5 em 
long, 2 to 4 cm. broad, obtuse or acute, remotely denticulate, slightly 
sinuate, narrowed below into a winged petiole, sparingly hirsute-~pubescent 
on both surfaces, subtrinerviate from near the base; stem-leaves few, 
remote and smaller: heads few, 1.5 em. high, including the rays 3.5 to 
4 cm. in diameter, disposed on long bractless pubescent peduncles 8 to 18 
