301 
oblong-linear, sharp-pungent, 5 cm. or more long, with 3 or 4 pairs of spines or the 
inner ones sometimesentire; bractlets blue, pungent, a little longer than the flowers. 
Collected by Mr, E, W, Nelson on Mount Orizaba, altitude 10,500 to 13,800 feet, 
March 18, 1894 (No. 271). 
The type was collected by Mr. Henry Seaton from this mountain in 1891. 
Near £. protefliorum, but with more scattered stem leaves, narrower radical leaves, 
and fewer bracts, and bearing several heads. Galeotti’s No, 2763, which was found on 
Mount Orizaba at exactly the altitude of the type and referred to EF. proteflorum, 
is in all probability the above plant. 
Foeniculum foeniculum (L.) Karst. Deutsch. Fl. 837 (1880-83); Anethum faniculum 
L. Sp. PL. i, 263 (17538). 
Collected by Mr. E. W. Nelson on the side of the trail between Coixtlahuaca and 
Tamazulapan, Oaxaca, November 12, 1894 (No. 1954). 
Reported as very rare. This species we have not seen before from Mexico, 
although it has doubtless become established in some places. 
Hydrocotyle bonariensis Lam. Knceycl. iii, 153 (1789). 
Collected in the vicinity of Cuicatlan, altitude 2,000 feet, by C. G. Pringle, Novem- 
ber 6, 1894 (No. 5551); and by Mr. E. W. Nelson, October 8 to 24, 1894 (No, 1624); 
also by Rev. Lucius C. Smith, August 20, 1894 (No. 120). 
Hydrocotyle mexicana Cham. & Schlecht. Linnma, v, 208 (1830), 
Collected by Mr. C. G. Pringle in damp woods, Sierra de Reyes, altitude 8,000 
feet, November 8, Isat (No. 6036); and by Mr. E. W. Nelson in the vicinity of 
Totontepec, altitude 5,500 to 7,000 feet, July 15 to 20, 1894 (No. 769); vicinity of 
Cuicatlan, altitude 1,800 to 92,500 feet; October & to 24, 1894 (No. 1751); mountains 
near Tlapancingo, December 7 , LOL CNo, 2084); vicinity of Choapaim, altitude 3,800 
feet, July 28 to 29, 1894 (No. SO) ; also by Mr. Pringle along shaded banks, Orizaha, 
Vera Cruz, February 4, 1895 (No. 5555); and by Mr. Nelson near Plunia, altitude 
3,000 to 4,800 feet, March 17, 1895 (No, 2470). 
Hydrocotyle prolifera Kellogg, Proc. Cal. Acad. i, 14 (1854). 
Collected by Mr. E. W. Nelson at Orizaba, January 28, 1894 (No, 41); also by Mr. 
C. G. Pringle on moist sands near Vera Cruz, April 25, 1894 (No. 5554). 
Micropleura renifolia Lag. Ocios Esp. Emigr. iv, 347 (1825); Obs. Aparas, 15 
(1826). 
Collected by Mr. C. G. Pringle on the Sierra de San Felipe, September 10, 1894 
(No. 4664); also by Mr. E, W. Nelson on the west slope of Mount Zempoaltepec, 
altitude 7,700 to 8,000 feet, July 5 to 13, 1894 (No. 588); vicinity of Totontepee, alti- 
tude 5,500 to 7,000 feet, July 15 to 20, 1894 (No. 746); and near La Parada, altitude 
7,500 to 8,500 feet, August 19, 1894 (No. 1019). 
Museniopsis Coult. & Rose, Revision Umbellifere, 123 (1889), enlarged. 
Calyx teeth obsolete. Stylopodium wanting or low and depressed: fruit flattened 
laterally, oblong to ovate, often cordate at base, rounded or slightly beaked, glabrous: 
carpels terete or slightly flattened laterally, with equal filiform ribs and thin peri- 
carp: oil-tubes indefinite: seed face strongly involute, often inclosing a central 
cavity.—Low and acaulescent or taller, caulescent, and much branched. Leaves 
mostly much dissected, either toothed or with long filform segments. Umbels mostly 
numerous and small; involucre and involucels generally wanting; flowers always 
yellow. 
This genus differs from Enlophus proper in the absence of calyx teeth, in the small 
or wanting stylopodia, in the flattening of the carpel, in the seed face, the color of 
the flowers, etc. From Arracacia it differs especially in its habit, smaller fruit, more 
indefinite oil-tubes, etc. We have experienced more difficulty in separating it tech- 
nically from Vela than from either of the above genera, although we consider it as 
equally distinct. Typical Veliea is stouter, with broader leaves, strongly toothed 
