90 OONTBIBUTION8 FROM I Hi NATIONAL HERBARIUM. 



Dasylirion lueidum Roee, Bp. DOV. 



Stems one to two meters high, crowned by a fluster of leaves; leaves 10 to 60 cm. 

 Long, 12 t" IS mm, broad above the enlarged base, greenish-yellow, Btnooth and 

 shining on both surfaces, tin- marginal teeth reddish brown, the edge serrulate 

 between the teeth, the apex resolving into a long tuft of fibers; inflorescence panic- 

 ulate, 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 al apex, 3-winged, the wings 

 rounded at apex and distinct from tin- Bhoct but evident style; ovules 6; seedsone, 

 Borneo hat 3-angled in section. 



Type r. 8. National Herbarium no. 453508, collected by Rose and Painter on the 

 limestone hill- west of Tehuacan, Puebla, September L, L905 (no. 10009), and in 

 flower earlier the same year (June) by Dr. C. A. Purpus (no. L25 



This species is perhaps nearest D. serratifolium but is certainly distinct, that Bpecies 

 having broader scabrous, yellow-spined, and dull-colored leaves. .J. < >. Baker states 

 that the wings are adnate to the Btyle, but an examination of the figure cited by 

 him does not clearly hear this out. I find no record of fruit having been collected 

 by anyone except Karwinsky. 



CAUBAKT 9. 

 Calibanus Rose, tr^-n . nov. 



Plants dioecious; flowers, both male and female, arranged in short and broad pan- 

 icles; perianth segments 6, orbicular, obtuse; stamens 6, only Blightly exserted; ovary 

 3-celled, 6-ovuled; fruit globular, l-seeded, thick-walled, not bursting when ripe; 

 seed globose or somewhat 3-angled; trunk a large globular body covered with thick 

 hark: 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 Noliua. but differs greatly in its habit and in its globular, 



thick-walled, l-seeded fruit. It is very different both in habit, inflorescence, and 



fruit from Dasylirion, t<» which it has long been referred. Its globular trunk BUg- 



Beaucarnea, in which it was once placed by J. <;. Baker, but its fruit excludes 



it from that genus. 



The genus is named for Shakespeare's Caliban. 



Calibanus caespitosus (Scheidw. Rose. Plates XXIV, XXV. Figure 4. 



Dasylirion caespitosum Scheidw. Wbchenschrift Verein Gartenb. 4:286. 1861. 



Dasylirion hookeri Lemaire, Hort. Belg. 15: 

 324. 1865. 



Beaucarnea hookeri Baker, Journ. Bot. 1872: 



r ^^c 327.1872. 



Pio. t.-Kn.i, of calibanus caespitosus. ,Mant ^^ ^P" 30 to l00cm : in diameter 



o, Side view; b, cross Bection showing covered with a thick corky bark like that ot an 



seed; c, cross section Bhowing undeyel oak, within of loose cellular structure, resting 



oped ovules at base. Allscale-2. U])(1I1 th(> ^ rouI1 ,| \\\ <v ., pu ffball and attached 



to the earth only bysmall fibrous roots; leaves 30 to 90 cm. long, linear. 2 to 2.5 mm. 

 broad, pale green, Blightly serrulate, striate; panicle 10 to 20 cm. long, about 10 cm. 

 broad, the horizontal branches quite rigid; segments of the flower orbicular, scarious- 

 margined, purplish; fruit 5 to 7 mm. in diameter. 

 Spi cimens examined: 



San Luis PotOflf: Near City of San Luis Potosf, C. R. Orcutt, 1903 I trunk only : 



Dr. I'.. Palmer, L905 (numerous plants but no How. • 

 Hidalgo: Near [xmiquilpan, Rose & Painter, L905 >54 with male and 



female flowers and immature fruit; Dr. C. A. Purpus, same date and place; 



also later, in fruit. 



This plant was illustrated in the Botanical Magazine for 1859 {pi. 6099) under the 

 name of Dasylirion hartweaianum, the plate being accompanied by the follow ing not.- 





