JANUARY 1 TO DECEMBER 31, 1963 265 



293170 to 293195. 



From Mexico. Plants collected by H. S. Gentry and A. S. Barclay, agricul- 

 tural explorers, Crops Research Division, Plant Industry Station, Belts- 

 ville, Md. Received Oct. 9, 1963. 



293170 to 293172. Agave cf. Americana L. Amaryllidaceae. 



293170. Col. No. 20154. Along Route 57, 50 kms. south of Saltillo, 

 Coahuila-Nuevo Leon border. Elevation 1,675 meters. Plant culti- 

 vated, erect; rosettes glaucous gray; leaves spreading; peduncles to 

 8 meters high; laterals, 20 or more, in terminal third of shaft. 



293171. Col. No. 20160. Open valley slope, 90 kms. south of Galena, 

 Nuevo Leon. Elevation 1,650 meters. Plant in wild, medium large, 

 symmetrical, pale glaucous to glaucous green; rosettes with double- 

 curved leaves; peduncles to 6 meters high. 



293172. Col. No. 20176. Sierra San Manuel, 35 miles east of San Luis 

 Potosi, along road to Rio Verde. Elevation 1,500 meters. Plants 

 glaucous gray; leaves few; suckering rosettes in seeding population; 

 panicles small to large; peduncles 7 meters high with 10 to 20 later- 

 als; buds pink to yellow. 



293173. Agave cf. angustifolia Haworth 



Col. No. 20261. Along road to Huajuapan, 28 km. southwest of Tehua- 

 can. Elevation 1,825 meters. Plant in wild; rosettes bluish-gray, glau- 

 cous; leaves straight, swordlike; peduncles to five meters high; flowers 

 green with purple flush on tepal tips. 



293174. Agave ferox C. Koch 



Col. No. 20204. Limestone slope along road to Puebla, 29 km. north of 

 Hehuacan. Elevation 1,900 meters. Plant in wild, large, big headed, 

 glaucous; rosettes green; leaves broad, ascending; panicles four, large, 

 pyramidal, with 10 to 16 laterals, capitated; pedicels large, bracted above; 

 umbels loose ; tepals yellow with reddish tips. 



293175. Agave karwinskyi Zucc. 



Col. No. 20357. Zapotitlan, Puebla. Elevation 1,500 meters. Trunks 

 1.5 meters high with small crown of green leaves; panicles in bud to 3 

 meters high, with 14 laterals. 



293176 and 293177. Agave kerchovei Lem. 



293176. Col. No. 20223. Limestone roadside, 8 km. southwest of Tehua- 

 can, road to Zapotitlan, Puebla. Elevation 1,830 meters. Plants 

 large, scattered singly on rocky slope; rosettes open; leaves and teeth 

 form variable. 



293177. Col. No. 20278. Rocky, brushy hillside along Pan-American 

 Highway, 22 km. southeast of Huajuapan, Oaxaca. Elevation 1,800 

 meters. Large population of large plants; rosettes single; leaves stiff, 

 erect, green, plane, mostly armed; peduncles to 8 meters high, densely 

 flowered on terminal two-thirds; buds green; flowers green with tepals 

 tinged reddish bronze inside. 



293178. Agave macroacantha Zucc. 



Col. No. 20359. Zapotitlan, 12 miles southwest of Tehuacan, Puebla. 

 Elevation 1,700 meters. Rosettes small, glaucous blue; leaves numerous; 

 panicles 2.3 meters high with 8 laterals and large oblong capsules. 



293179. Agave marmorata Roezl. 



Col. No. 20225. Local name: Pitzomel. Eight km. southwest of Tehua- 

 can, along road to Zapotitlan, Puebla. Elevation 1,800 meters. Rosettes 

 large, open, green to glaucous ; leaves broad, sprawling, flexuous. 



