STAiSTDLEY TREES AND SHRUBS OF MEXICO. 139 



Oaxaca ; type, in the hei'barium of the Missouri Botanical Garden, from 

 Mexia, Trelease. 



152. Agave angustiarum Trel., sp. nov. 



Leaves openly spreading, rather thin, glaucous, 5 to 13 cm. wide, 80 to 100 cm. 

 long, with very slender spine 25 to 35 mm. long, and rather slender and curved 

 teeth 15 to 40 mm. apart and 2 to 6 mm. long, the nearly straight intervening 

 border scarcely over 1 mm. wide ; inflorescence 1.5 to 4 meters tall ; flowers 

 glaucous greenish white, 35 to 40 mm. long, with very short tube ; capsules 12 to 

 15 mm. broad, 25 mm. long ; seeds 2 to 3 mm. wide, 3 to 5 mm. long. 



Guerrero; type, in the herbarium of the Missouri Botanical Garden, from 

 the canyon between Naraujo and Los Amates, Trelease. 



153. Agave xylonacantha Salm-Dyck, Bonplandia 7: 92. 1859. 

 Agave amurensis Jacobi, Hamb. Gart. Zeit. 20: 548. ■'1864. 

 Agave kochii Jacobi, Hamb. Gart. Zeit. 22: 117. 1866. 



Hidalgo and San Luis Potosi ; type cultivated in Europe, said to be from San 

 Luis Potosi, but later records include Ixmiquilpan and Real del Monte. 



Leaves loosely spreading, rather thin, undulate or contorted, dull, mostly 

 grayish green, rough, the Mck with darker lines, 5 to 12 cm. wide, 30 to 60 cm. 

 long, with flexuous gi'ay spine about 5 mm. wide and 40 to 50 mm. long, and 

 large, triangular or confluently broad and very irregular teeth 15 to 40 mm. 

 apart, these 10 to 15 mm. long, and nearly as broad over green prominences 

 between which the nearly straight connecting horny margin is 1 to 2 mm. wide. 



154. Agave washingtonensis Baker & Rose, Rep. Mo. Bot. Gard. 9: 121. 1898. 

 Region ? ; type cultivated at Washington. 



Leaves spreading, dark green, smooth, 7 to 10 cm. wide, 75 cm. long, with 

 very short slender spine and small mammaeform teeth scarcely 10 mm. apart 

 and 2 mm. long, these concave at base and connected by a very narrow horny 

 border. 



155. Agave splendens Jacobi, Abh. Schles. Ges. Vaterl. Cult. 1870: 147. 1870. 

 Region ? ; type cultivated in Europe. 



Leaves uniformly spreading, often with axillary branches, dark blue-green, 

 glaucous when young, smooth, somewhat pale-banded above and dark-lined be- 

 neath, 4 to 5 cm. wide, 35 to 60 cm. long or more, with slender, more or less 

 flexuous, gray spine 30 mm. long, and unequal, often doubled, variously curved, 

 triangular teeth 20 to 40 mm. apart and 6 to 12 mm. long, these concave at base 

 and connected by a moderately heavy border. 



156. Agave vittata Regel, Gartenflora 7: 313. 1858. 

 Agave haynaldi Tod. Hort. Panorni. 1: 88. 1876. 

 Agave toweliana Baker, Gard. Chron. 1881: 362. 1881. 



Nuevo Leon; type cultivated in Europe, probably from the mountains about 

 Monterrey. 



Leaves spreading along a distinct short trunk, dark green, often with pale 

 ventral stripe, 6 to 7 cm. wide, 70 cm. long, with slender brown-tipped spine 20 

 mm. long, and variously curved triangular teeth 25 to 50 mm. apart and 4 to 7 

 mm. long, these on more or less oblique fleshy prominences, the very narrow con- 

 necting horny border frequently absent from the middle of the leaf. 



157. Agave victoriae-reginae Moore, Gard. Chron. n. ser. 4: 484. 1875. 

 Agave eon&ideranti Carr. Rev. Hort. 1875: 429. 1875. 



Kuevo Leon, Coahuila, and Durango; type locality near Monterrey, Nuevo 

 Leon. 



Leaves very many, very hard and crowded in a round cluster, dark green, 

 4 to 6 cm. wide, 15 to 20 cm. long, acutely 3-sided, mth 1 or 3 black' apical 



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