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MISSOURI BOTANICAL GARDEN. 



Yucca rostrata linearis n. var. 



Differing fom the type* in its narrowly linear leaves measuring 3-4 

 X 40 cm.,— those of the typical form being 6-12 (usually 8-10) mm. wide. 



Canons of the Sierra de Pata Salana and Sierra de Parras, 

 Coahuila, Mexico, Purpus, 1904 and 1905. Cultivated at the 

 Missouri Botanical Garden. 



Leaves of the normal size for the species, entirely smooth- 

 edged or locally with a few minute teeth, collected near Sa- 

 binas, Coahuila, in March, 1906, by Dr. Endlich, who gives 

 "soyate" as the local name of the plant, represent another 

 interesting form of Y. rostrata, which in its typical form 

 should be noted as the 7. rupicola rigida of Mr. Watson in 

 Proc.Amer. Acad. 18 : 163, (1883), where a description is given 

 of Palmer's material from Monclova in the same Mexican 

 state. • 



HeTERO YUCCA. 



Yucca gigantea Lemaire. 



Fruit received from an Azorean garden in the autumn of 

 1902 shows that this is really one of the Sarcoyuccas, and the 

 name should doubtless take place as a synonym of Y. ele- 

 phantipes, where it would have been located in the monographf 

 except for the seemingly aberrant fruit. 



Sarcoyucca. 



Yucca valida Brandegee, Proc. Calif. Acad. ii. 2 : 208. pi. 

 n—Gsivd. & For. 3: 106.— Trelease, Rept. Mo. Bot. 

 Gard. 13 : 108 (as to Lower Calif ornian material), pi. 67. 



Arborescent, 15-20 ft. [4.5-6 m.] high, tnmks 8 in. [20 cm.] -2 ft. 

 [61 cm.] or more in diameter, growing in clumps and branching from near 

 the base or higher: leaves [lanceolate], thin, smooth, flexible, 6-9 in. [15-23 

 cm.] long, h-l in. [1.2-2 cm.] wide at the center, tapering to a stout invo- 

 lute spine above, and narrowed to less than half its width above the 

 brown, dilated base, margin separating into slender [to coarse] whitish 

 recurved threads, [the cluster of green leaves elongated]. Panicle pjTam- 

 idal, about 1 ft. [30 cm.] long, somewhat pubescent. Perianth cream- 



* Rept. Mo. Bot. Gard. 13 : 68. p/. 36 f. 2, 40-42, 84 j. 3, 93. 

 t Rept. Mo. Bot. Gard. 13 : 71. 



