92 CONTRIBUTIONS PROM nil NATIONAI HERBARIUM. 



Type specimen U. 8. National Herbarium no. 301306 J. \ Rose, 

 v tied: 



Zacatecas: [n the mountains, J. N Rose, August I s . 1897 (n< 



Dnrango: Dr. I'. Palmer, 1896 qo. 249 ; I. W. Nelson between £1 Oro and 



Guanacevi, August, i s ' ,s qo. 4745 . 

 Chihuahua: Townsend & Baker, near Colonia Garcia, June, 1899 (no. ■ 

 \ gam has been confused in collections with both N. microcarpa and A'. 



\ia. From the former it differs in it- broader, Btiffer leaves, Larger fruit, etc. 

 Prom the latter it is genericall} distinct, and it i- needless to point out the differences 

 here. 



Nolina erumpans (Ten-, i 8. Wats. Proc. Am. Acad. 14:248. 1878. 



Nolina g-eorgiana Michx. II. 1:208. 1803. 



Nolina greenei S. Wat-. Bot. < >a/. 5:56. 1880, 



Nolina hartwegiana (Zucc.) Hemsley, Biol. Centr. Am. 8:371. 1884. 



Nolina humilis S. Wats. Proc. Am. Acad. 14:248. L879. 



Nolina lindheimeriana (Scheele) S. Wats. Proc. Am. Acad. 14:iM7. L879. 



Nolina longifolia (Karw.) Hemsley, Biol. Centr. Am. 3:372. 1884. 



Nolina microcarpa S. Wats. Proc. Am. Acad. 14:247. 1879. 



Nolina nelsoni Rose, Bp. nov. 



Trunk 1 to •"! meters high; leaves 50 to 70 cm. long, •'! to 4 cm. broad above the 

 base, gradually tapering to a point, both surfaces smooth, the margins Berrulate; 

 inflorescence, including the peduncle, 2 to :;.-") meters long; bracts scarious, lacerate; 

 pedicel- 5 to 6 mm. long, jointed near the middle; sepals ovate, obtuse, scarious- 

 margined; mature fruit not seen. 



Type specimen I'. S. National Herbarium no. 332674, collected by E. W. Nelson 

 near Miquihuana, Tamaulipas, June L0, L898 no. 448 



In its leaves this species resembles .Y. parryiand N. bigelovii of the Far West, !>nt 

 it is certainly quite distinct: 



Nolina palmeri S. Wats. Proc. Am. Acad. 14:248. 1879. 



Nolina parryi S. Wats. Proc. Am. Acad. 14:iM7. 1879. 



Nolina parvifiora ill. B. K.) Hemsley, Biol. Centr. Am. 3:372. L884. 



Nolina pumila Rose, sp. nov. 



Acaulescent; leaves numerous, in some specimens erect, in others recurved, 20 to 

 30 cm. long, linear, many-nerved (sometimes 15 to 20-nerved), the apex entire bu1 

 in most cases broken <<ii. the margin serrulate; Inflorescence a narrow panicle. 20 to 

 30 cm. long, the peduncle and lower branches leaf y-bracted; male flowers nol 

 peduncles slender, <> to 7 mm. long, jointed jnst above the base, somewhat enlarged 

 upward; sepals papery, oblong, obtuse, '■'< nun. long; fruit dry, strongly 3-lobed, 

 indehiscent but the walls early falling away, leaving the naked seed; Btyleshori but 

 distinct; cells •'!: ovules <i; mature seeds •">. one in each cell, globular. 



Type specimen Q. 8. National Herbarium no. .'5<>1(>74. 



Collected by J. N. Rose near Santa Teresa, Tepee. August 10, 1897 (no. 2166); 

 and also in southern Durango, August 16, 1897 (no. 2340). 



Nolina texana >. Wats. Proc. Am. Acad. 14:248. 1879. 



Nolina watsoni | Baker) Hemsley, Biol. Centr. Am. 3: 372. L884. 



