114 - J. N. Rose. 
old leaves; leaves at first erect, then spreading, and at last reflexed, 
long-persisting, very pale, 50 to 60 om long, 10 to 12 mm broad, the 
margin pale and entire. 
Type specimen U, S. National Herbarium no. 453659, collected by 
J. N. Rose and Jos. H. Painter near Tehuacán, Puebla, in 1905 
(no. 10156). 
6. Dasylirion lucidum Rose, 1. c., p. 90. 
Stems one to two meters high, crowned by a cluster of leaves; 
leaves 40 to 60 em long, 12 to 13 mm broad above the enlarged base, 
greenish-yellow, smooth and shining on both surfaces, the marginal teeth 
reddish brown, the edge serrulate between the teeth, the apex resolving 
into a long tuft of fibers; inflorescence paniculate, 2 to 3 meters high 
including the peduncle; male racemes rather slender, 5 to 6 cm long; 
fruiting panicle narrow and dense, the racemes appressed to the main 
axis; pedicels short, articulated near the apex; perianth lobes 2 mm long, 
obtuse; fruit 7 mm long, 5 mm broad, rounded at base, retuse at apex, 
3-winged, the wings rounded at apex and distinct from the short but 
evident style; ovules 6; seeds one, somewhat 3-angled in section. 
Type U. S. National Herbarium no. 453508, collected by Rose and 
Painter on the limestone hills west of Tehuacán, Puebla, September 1, 
1905 (no. 10009), and in flower earlier the same year (June) by Dr: C. 
A. Purpus (no. 12533). 
This species is perhaps nearest D. serratifolium but is certainly 
distinct, that species having broader scabrous, yellow-spined, and dull- 
colored leaves. J. G. Baker states that the wings are àdnate to the style, 
but an examination of the figure cited by him does not clearly bear this 
out. I find no record of fruit having been collected by anyone except 
Karwinsky. 
Calibanus Rose, gen. nov. 5 
Plants dioecious; flowers, both male and female, arranged in short 
and broad panicles; perianth segments 6, orbicular, obtuse; stamens 6, 
only slightly exserted; ovary 3-celled, 6-ovuled; fruit globular, 1-seeded, 
thick-walled, not bursting when ripe; seed globose or somewhat 3-angled; 
trunk a large globular body covered with thick bark: leaves appearing 
in fascicles over the surface, linear, entire or serrulate to the touch; 
panicles arising with the leaf clusters, leafless. 
This genus is nearest Nolina, but differs greatly in its habit and in 
its globular, thick-walled, 1-seeded fruit. It is very different both in 
habit, inflorescence, and fruit from Dasylirion, to which it has long been 
referred. Its globular trunk suggests Beaucarnea, in which it was once 
placed by J. G. Baker, but its fruit excludes it from that genus, 
The genus is named for Shakespeare's Caliban. 
7. Calibanus caespitosus (Scheidw.) Rose, |. e p. 90. 
Syn.: Dasylirion hartwegianum Bot. Mag., 1859, pl. 5099. 
Dasylirion caespitosum Scheidw. Wochenschrift Verein Gartenb. 
IV, 286, 1861. 
