152 Trans. Acad. Sci. of St. Louis. 



Plate XXII. — Agave nivea. Above, type plants in a hedgerow at El 

 Rancho, Guatemala, Xl/30. Below, spines and leaf-margins from the 

 type (Trelease, 11), natural size. 



Plate XXIII. — Agave Donnell-Smithii. Plant in a hedge at Escu- 

 intla, Guatemala. 



Plate XXIV. — Agave Donnell-Smithii. Above leaf arming from the 

 type (Smith, 2085). Below, spines and portion of leaf from the plant 

 pictured in pi. 23 (Trelease, 15). Both natural size. 



Plate XXV. — Agave Donnell-Smithii. Fragment of a panicle branch 

 from the type (Smith, 2085), natural size. 



Plate XXVI. — Agave tecta. Type group of plants in a hedgerow at 

 Quezaltenango, Guatemala: the upper, Xl/60; the lower, Xl/30. 



Plate XXVII. — Agave tecta. Spines, leaf-margins, bud, and imper- 

 fectly developed flowers, from the type (Trelease, 17 — shown above in 

 pi. 26), natural size. 



Plate XXVIII. — Furcraea longaeva. A representative group of trees 

 in the Mexican state of Oaxaca. Photographed by Dr. C. A. Purpus. 



Plate XXIX. — Furcraea quicheensis. Flowers, and portion of leaf, of 

 the type (Cook, n. b. 421), natural size. 



Plate XXX. — Furcraea samalana. A flowering plant, in the vicinity 

 of Quezaltenango, Guatemala. Photographed by Mr. G. Hurter. 



Plate XXXI. — Furcraea samalana. Leaf-tips and margins, from the 

 type (Trelease, 20), and bulbils, from a plant below Sta. Maria, Gua- 

 temala (Trelease, 29), natural size. 



Plate XXXII. — Furcraea guatemalensis. The type plant, in a hedge- 

 row near Guarda Viejo, Guatemala. 



PLATE XXXIII. Furcraea guatemalensis. Above, plant growing on 

 a steep hillside, showing the upcurving leaves, Guatemala City. Be- 

 low, leaf-tips and margin, from the type (Trelease, 23), natural size. 



Plate XXXIV. — Furcraea guatemalensis. Capsules, seeds and bul- 

 bils, natural size. Palin, Guatemala (Trelease, 30). 



Plate XXXV. — Furcraea melanodonta. Above, the type group, at 

 Cruz, Guatemala. Below, leaf-tips and margin, from the type (Tre- 

 lease, 26), natural size. 



The University of Illinois, June 2, 1915. 



Issued July 15, 1915. 



