698 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Madia glomerata Hook. Fl. Bor. Amer. 2: 24, 1834. 
Tyre LOCALITY: ‘‘ Plains of the Saskatchawan.”’ 
RanaeE: British America to Colorado and northern New Mexico. 
New Mexico: Chama; Brazos Canyon. Moist ground in the mountains, in the 
Transition Zone. 
52. BLEPHARIPAPPUS Hook. 
Stout, hirsute, sparingly branched annual with alternate, entire, linear or oblong, 
sessile leaves, and rather large heads of white flowers; rays large and showy; invo- 
lucre of a single series of narrow bracts with scarious margins, inclosing the achenes 
of the ray flowers; receptacle flat, bearing a series of chaffy bracts between the ray 
and disk flowers; achenes somewhat compressed, those of the ray flowers destitute 
of pappus, the inner ones with a pappus of numerous bristles. 
1. Blepharipappus glandulosus Hook. FI. Bor. Amer. 1: 316. 1830. 
Layia glandulosa Hook. & Arn. Bot. Beechey Voy. 350. 1833. 
Layia neomexicana A. Gray, Pl. Wright. 2: 98. 1853. 
Tyre Locauity: “Common on the plains of the Columbia, in sandy soils, under 
the shade of Purshia and Artemisia.”’ 
RanGe: British Columbia and Idaho to California and New Mexico. 
New Mexico: Mangas Springs. 
53. GUARDIOLA Humb. «& Bonpl. 
Erect annual with sessile, mostly connate, oblong-lanceolate leaves and small 4- 
flowered turbinate heads, each with a single ray; involucre of 3 concave membrana- 
ceous bracts; achenes oblong, slightly compressed, glabrous; pappus wanting. 
1. Guardiola diehlii Jones, Contr. West. Bot. 12: 48. 1908. 
Type Locauiry: ‘‘ Albuquerque and Socorro, New Mexico.” 
RanGE: Known only from the type collections. 
We have seen no specimens of this species. 
54. DICRANOCARPUS A. Gray. 
Low slender annual, the leaves divided into linear segments; heads small, with 
3 or 4 ray flowers and 3 or 4 disk flowers, the rays small and inconspicuous; involucre 
of 3 or 4 narrow bracts and sometimes 1 or 2 small foliaceous outer ones; achenes dimor- 
phous, 1 or 2 elongated, puberulent, smooth, with 2 long divergent awns, the others 
short, more or less tuberculate, bearing 2 short divaricate horns. 
1. Dicranocarpus dicranocarpus (A. Gray) Woot. & Standl. Contr. U. S. Nat. 
Herb. 16: 189. 1913. 
Heterospermum dicranocarpum A. Gray, Pl. Wright. 1: 109. 1852. 
Dicranocarpus parviflorus A. Gray, Mem. Amer. Acad. n. ser. 5: 322. 1854. 
Wootonia parviflora Greene, Bull. Torrey Club 25: 122. 1898, 
TYPE LocaLity: Plains between the Guadalupe Mountains and the Pecos, western 
Texas. 
Rance: Southern New Mexico and western Texas to northeastern Mexico. 
New Mexico: White Sands. Alkaline soil, in the Lower Sonoran Zone. 
55. MELAMPODIUM L. 
Perennial herb, 30 cm. high or less, often woody at the base, with opposite, entire, 
linear to spatulate leaves; heads long-pedunculate, with large white rays; bracts 
in 2 series, the outer 4 or 5 flat, ovate, partially united, the inner each embracing 
an achene and deciduous with it; achenes obovate, incurved; pappus none. 
