299 
rate, alternating, the longer spines 25 mm. long; upper stem leaves 3-lobed or 3-cleft; 
uppermost leaves linear, entire; heads numerous, small, on short peduncles; involu- 
eral bracts linear, entire, longer than the heads; involucels conspicuous, 
Collected by Mr. E. W. Nelson from near the top of Sierra Madre near Chilpan- 
cingo, Guerrero, altitude 9,000 to 10,200 feet, December 24, 1894 (No. 2248). 
Eryngium beecheyanum Iook. & Arn. Bot. Beech, 294 (1889 or -40). 
Collected by Mr. C. G. Pringle on the continental divide near Las Sedas, altitudé 
6,000 feet, August 16, 1894 (No, 5544a); also by Mr. E, W. Nelson on mountains at 
northend of Valley of Oaxaca, altitude 6,800 to 7,800 feet, October 3, 1894 (No. 1565), 
We have not seen either type or authentic specimens of this species, but this refer- 
ence seems reasonably certain. 
Eryngium bromelizfolium Delar. Eryng. Hist. 60, t. 28 (1808). 
Collected by Mr. LE, W. Nelson near Reyes, Octeber 20, 1894 (No. 1739); summit 
of Mount Zempoaltepec, altitude 11,400 feet, July 9, 1894 (No. 620); Sierra de San 
Felipe, September 20 to 30, 1894 (Nos. 1182, 1129); also by Mr. C. G. Pringle, moun- 
tains about Oaxaca, altitude 10,000 feet, May 22, 1894 (No. 5540); Sierra de San 
Felipe, altitude 10,000 feet, November 14, 1894 (No. 6045); Sierra de Reyes, altitude 
10,000 feet, November 9, 1894 (No. 6038). 
More than one species may be represented among these specimens. 
Eryngium carline Delar. Eryng. Hist. 53, t. 23 (1808). 
Collected by Mr. C. G. Pringle in fields near Orizaba, State of Vera Cruz, Febru- 
ary 2, 1895 (No. 55538), 
Eryngium cymosum Delar. Eryng. Uist. 63, t. 31 (1808). 
Collected by Mr. E, W. Nelson along the road between Tixtla and Chilpancingo, 
Guerrero, December 16, 1895 (No. 2172). 
Eryngium deppeanum Cham. & Schlecht. Linniea, v, 207 (1830). 
Collected by Mr. E. W. Nelson in the Valley of Oaxaca, altitude 5,500 to 7,500 feet, 
September 20, 1894 (No. 1443); near the road between Ayusinapa and Petatlan, Guer- 
rero, altitude 5,000 to 7,000 feet, December 14, 1894 (No. 2119); also by Mr. C. G. 
Pringle, Sierra de San Felipe, altitude 7,500 feet, October 5, 1894 (No. 5548a). 
Eryngium ghiesbreghtii Decaisne, Bull. Soc. Bot. France, xx, 21 (1873). 
Stems from a cluster of slender fleshy-thickened roots, 6 to 12 dm. high, either 
simple or more or less-branched; radical and lower stem leaves lanceolate, acute, 
rounded or somewhat cordate at base, serrate, 7.5 to 10 cm. long, on petioles 7.5 to 
12.5 em. long; upper stem leaves much reduced, opposite; peduncles slender; heads 
oval or short-oblong, 12 to 15 mm. long; involucral bract shorter than the heads, 
lanceolate, pungent, with 2 to 4 spiny teeth or lobes; bractlets of the involucels 
linear, entire, pungent. 
Collected by Mr. C. G. Pringle in oak woods on the Sierra de San Felipe, altitude 
7,500 feet, November 17, 1894 (No. 4746); and by Mr. E. W. Nelson on mountains 
near Tlapancingo, altitude 6,000 to 8,000 feet, December 7, 1894 (No. 2061). 
Eryngium involucratum Coult. & Rose, sp. noy. 
Stems low, 6 dm. high; radical and lower stem leaves linear, 15 to 20 cm. long; 
the margins with spiny teeth, the longer ones longer than the breadth of the leaves; 
upper stem leaves opposite, deeply cleft; involucral leaves numerous, conspicuous, 
much longer than the large heads, lanceolate, with pungent teeth; bractlets of the 
involucels linear, pungent. 
Collected by Mr. C. G. Pringle on Sierra de San Felipe, altitude 10,000 feet, Novem- 
ber 14 and December 24, 1894 (No. 4747). 
Eryngium longirameum Turez. Bull. Soc. Nat. Mose, xx, pt. 1, 171 (1847), 
Collected by Mr. C. G. Pringle on the Cuesta de San Juan del Estado, altitude 
7,500 feet, August 21, 1894 (No, 4910); also by Mr. E. W. Nelson 18 miles southwest 
4525—No. 5 2 
20 
