140 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



spines 5 to 10 mm. long, these decurrent into marginal and usually dorsal 

 detachable horny borders. 



" Noa " ; the short but strong tiber used for bundles. 



With fewer leaves, and consequently forming a less compact plant, it is f. 

 itickelsi (A. niclcclsi Rol. Goss. Rev. Hort. 1895: 579. 1895). " Pintillo." 



158. Ag-ave parviflora Torr. U. S. & Mex. Bound. Bot. 214. 1859. 

 Sonora ; type locality, Sierra del Pajarito. Also in adjacent Arizona. 

 Small and globose ; leaves ascending, numerous, green, dotted with gray, 



scarcely 1 cm. wide and 4 to 6 cm. long, denticulate at the base, elsewhere 

 bearing a few coarse outcurved marginal threads, the straight flattened spine 

 1 mm. wide and 5 mm. long. 



159. Agave toumeyana Trel., sp. nov. 



Rather larger, laxer, rrnd fewer-leaved than the preceding; leaves 1 cm. 

 wide, 5 to 10 cm. long, with flat brown spine scarcely 1 mm. wide and 5 mm. 

 long, the margin minutely hyaline-denticulate below the middle, at length 

 bearing numerous long slender white marginal threads; flowers 15 mm. long, 

 with short tube; capsules 7 mm. broad, 12 mm. long; seeds 2 mm. wide, 3 mm. 

 long. 



Southern Arizona ; type, in herbarium of the Missouri Botanical Garden, 

 from Pinal Mountains, Tourney in 1892 ; also in adjacent Sonora ? 



160. Agave hartmani ' S. AVats. Proc. Amer. Acad. 26: 156. 1891. 



Eastern Sonora (type cultivated at Cambridge, Massachusetts) and adjacent 

 Chihuahua. 



Resembling A. parviflora ; leaves falcate, with concave-based spine and finer 

 marginal threads. 



161. Agave mulfordiana Trel., sp. nov. 



Agave schottU semilota Mulford. Rep. Mo. Bot. Gard. 7: 73. 1896. 



Dimensions and aspect of the following and with similar marginal threads, 

 but the base denticulate. 



Southern Arizona ; type, in the herbarium of the Missouri Botanical Garden, 

 from Rincon Mountains, Tourney in 1894 ; also adjacent Sonora ? 



162. Agave schottii Engelm. Trans. Acad. St. Louis 3: 305. 1875. 

 Agave geminiflora sonorae Torr. U. S. & Mex. Bound. Bot. 214. 1859. 

 Arizona (type locality. Sierra del Pajarito) and adjacent Sonora. 



Leaves falcately ascending, rather few. green, scarcely 1 cm. wide and 15 

 to 80 cm. long, untoothed, with brown or golden spine 1 mm. wide and 5 mm. 

 long, and a few very tliin outcurving marginal threads. 



"Amole " ; the cro\ATi used as a substitute for soap. 



Without marginal threads it is var. atricha, the type cultivate*! at St. Louis, 

 without record. 



163. Agave schidigera Lem. 111. Hort. 9: pi. 330. 1860. 



Agave filifera adonmta Scheidw. Wochenschr. Yqv. Beford. Gartenb. 4: 287. 

 1861. 



Littaea roezlii Fonville, Rev. Hort. 1862: 39. 1862. 



Agave vestita S. Wats. Proc. Amer. Acad. 25: 163. 1890. 



MichoacSn (type cultivated, from about the VolcSn Jorullo), Zacatecas, Mex- 

 ico, and .Jalisco (the type of A. vestita, with more prismatic threads, from about 

 Guadalajara). 



i.C. V. Hartman and F. E. Lloyd made an extensive collection of plants in 

 Chihuahua and Sonora from 1890 to 1893. while accompanying Carl Lumholtz 

 in his ai'chaeological explorations. The collection was reported upon by Robin- 

 son and Fernald (Proc. Amer. Acad. 30: 114-123. 1894). A set of the plants 

 is in the U. S. National Herbarium. 



