﻿AGAVE MACROACANTHA AND ALLIED EUAGAVES. 253 



? A. Corderoyi brevifolia Belg. Hort. 1875 : 43. 



? A. Corderoyi longijolia Von der Heiden, Cat. 1879 : 11. 



A. Bakeri Ross, Boll. See. Sc. Nat. ed Econom. Palermo. 1894^; Icon, et 

 Descr. Panorm. 4. pi. 2. (1896).— Terracciano, BoU. R. Ort. Bot. 

 Palermo. 2 : 126. (1898). 



?? A.laxa Salm, Hort. Dyck. 8. (1834).— Steudel, Norn. 2 ed. 36. (1841).— 

 Otto, Allgem. Gartenzeit. 1842 : 50, 51.— Roemer, Fam. Synops. 

 Monogr., Ensatae. 292. (1847).— Kunth, Enum. 5 : 837-8. (1850).— 

 Thus far, name only.— Saira, Bonplandia 7:90. (1859); Wochen- 

 schr. Ver. Beford. Gartenbau. 1861 : 182; Fl. des Jard. 1862: 124.— 

 Koch, Wochenschr. Ver. Beford. Gartenbau. 1860 : 48; Fl. des Jard. 

 1861 : 148; Belg. Hort. 1862 : 310.— Jacobi, Hamburg. Garten-Zeit. 

 1864 : 460; 1865 : 263; Bull. Cong. Bot. et Hort. Amsterdam. 



ing an oblong cluster along a trunk at length 1-3 or 4 m. high, light or 

 olive green, dull or slightly glossy, thick and rigid, usually straight, con- 



X 35-70 cm.: spine from dark brown becoming grayish, strong and stout, 



3- 6 X 25-50 mm., terete or somewhat triquetrously keeled, openly and 

 shallowly grooved below, the raised sides decurrent sometimes for an 

 equal or greater length and the center usually projecting as a median 

 point into the tissue of the leaf: prickles nearly black, on mature leaves 



(mostly) 5 n^. long, their gradually acute long cusps usually strongly 

 upcurved, the little raised bases sometimes rhombically inserted, the mar- 

 gin nearly straight and usually smooth between them. Inflorescence 



4- 6 m. high, laxly oblong-paniculate in the upper half: pedicels 2 X 2-3 

 mm. Flowers olive, brownish, or purplish green: ovary 7-9 X 25 mm.: 

 tube of perianth oblong-conical, 10-12 X 10-18 mm., bearing the filaments 



dotted with purple, 35-45 mm. long. Capsules oblong, brown, shortly 

 stipitate and beaked, 25 X 35-50 mm., the dehiscent valves sparmgly con- 

 nected by interlacing fibers: seeds black, somewhat glossy, apparently 

 narrower, 4-6X8 mm.— Plates 29-31 f. 1. 



Mexican table-land, from Tehuacan southward at least as 

 far as Mitla, where it is somewhat planted for hedges. 



Specimens examined:— .Spow^aneo^is.• Tehuacan, Trelease, 

 August 1903, especially abundant between the southern side 

 of the Cerro Colorado and the village La Huerta, called 

 ''candellillo," and an aberrant form with enormous open end 

 spines 7 X 40 mm., Trelease, February 1905; Rose and Rose, 



