Nolineae novae. 51 
with numerous crowns of leaves, Leaves rather thin, somewhat con- 
cave and keeled, narrowly linear, 2—3 mm wide, serrulate-scabrous on 
the margin, noth brush-like at tip, blue. Inflorescence scarcely 25 cm 
long, shorter than the leaves, very short-peduncled, simply panicied with 
thin spreading branches 6—8 cm long, or with exceptional very short 
and few basal branchlets. Bracts scarious, much shorter than the sub- 
tended branches, the floriferous ones and the bractlets inconspicuous, 
ovate or lanceolate, little-toothed. Flowers minute. Perianth segments 
about 1 mm iong. Fruit triquetrously subglobose, 3-ribbed, 4—5 X 
5—7 mm. Seed melon-shaped, 3 X 3—4 mm. — PI. 6, 8, 9, 11, 14. 
— East-central Mexico. The type locality is Real del Monte. — 
Specimens examined: Hidalgo. Ixmiquilpan (Rose, Painter & Rose, 
8954, 1905; Purpus, 1200, 4775, 1905). San Luis Potosi. San Luis 
Potosi (Orcutt, 1908; Palmer, 1905). 
10. Dasylirion cedrosanum Trelease, |. c., p. 431. —  Dasylirion sp. 
Kirkwood, Pop. Sei. Monthly., LXXV, 438, 445. f. — Shortly caulescent. 
Trunk 1—1,5 m high. Leaves 20 mm wide, upwards of 1 m long, 
slightly brush-tipped, glaucous, slightly rough-keeled, dull; prickles 
mostly 10—15 mm apart, 2—5 mm long, yellow, becoming red upwards. 
Inflorescence 5 m high. Fruit very narrowly elliptical, 4 —5 X 7—9 mm, 
the style barely half as long as the narrow deep notch. Seed 2 X 3,5 mm. 
Pl. 5, 12, 15. — Northeastern Mexico. Overlapping the range of 
Nolina cespitifera. — Specimens examined: Zacatecas. Cedros (Lloyd, 
118, — the type, and 82, 1908; Kirkwood, 96, 1908) Coahuila. 
Rancho La Luz (?Endlich, 7, 1905). Saltillo ? Gregg, 78, 1846). Ango- 
stura (?Wislizenus, 307, 1847). 
11. Dasylirion Palmeri Trelease, l. c., p. 432. — Habit? Leaves 25 mm 
or more wide, scareely 1 m long, somewhat brush-tipped, green or 
lightly glaueous, smooth, dull: prickles mostly 15 —25 mm apart, 3—5 mm 
long, yellow, becoming brown upwards, the intervening margin rather 
smooth. Inflorescence moderately high. Fruit narrowly elliptical- or 
triangular-obovate, 3—4 X 6 mm, the stout style about equaling the 
rather open shallow notch. Seed 2 X 3 mm. — Pl. 12. — North- 
eastern Mexico. — Specimens examined: Coahuila. San Lorenzo 
Canon (Palmer, 696, 1905, — the type). 
12. Dasylirion Parryanum Trelease, l. c., p. 432. — Habit? Leaves 
becoming 10—15 mm wide, scarcely 50 cm long, brush-tipped, whitened, 
minutely roughened and dull: prickles about 5 mm apart, 2 mm long, 
yellow, becoming red upwards, the margin very rough between them, 
Inflorescence moderate, exceptionally sub-simple.  Perianth segments 
scarcely 2 mm long. Fruit elliptical or somewhat obovate, 4 X 6 mm, 
the style scarcely equaling the narrow moderately deep notch. Seed? 
— East-central Mexico. In the region of D. graminifolium and No- 
lina humilis and Watsoni. — Specimens examined: San Luis Potosi, 
Vicinity of San Luis Potosi (Parry & Palmer, 876, 1878, — the type; 
Schaffner, 242, 1878, — mixed with D. graminifolium?), 
An 
