112 PROCEEDINGS OF THE AMERICAN ACADEMY, 
excluding the short tube 6 mm. long, 4 mm. broad ; ray-achenes slender, 
6 mm. long: disk-flowers 20 to 25; corolla yellow or purplish: mature 
achenes 4 to 5 mm. long, appressed-pubescent on both surfaces, ciliate. 
— Mexico. State of Oaxaca: 17 October, 1899, #. W. D. Holway, 
no. 8747 (hb. Gr.), and 25 October, 1899, no, 3740 (hb. Gr.) ; altitude 
1750 m., July-August, 1900, Conzatti § Gonzdlez, no, 1002 (hb. Gr.) ; 
Ocotlan, December, 1901, Conzatti & Gonzdlez, no. 1263 (hb. Gr.) ; be- 
tween Coixtlahuaca and Tamazulapam, altitude 2000 to 2500 m., 12 
November, 1894, Z. W. Nelson, no. 1987 (hb. Gr., and hb. U. S. Nat. 
Mus.); Valley of Etla, altitude 1700 m., 23 October, 1895, LZ. C. Smith, 
no. 854 (hb. Gr.). 
Encelia squarrosa. Perennial, 4 to 6 m. high: stem slightly 
furrowed, tawny pubescent: leaves opposite, petiolate, ovate, 8 to 
15 cm. long, 5 to 8 cm. broad, acuminate, dentate, cordate, dark green 
and hirsute-hispid above, paler and hirsute-tomentose beneath, 3-9- 
nerved from or just above the base; petioles 2 to 3 cm. in length: 
inflorescence a terminal corymbose cyme: heads large, about 1.5. cm. 
high, including the rays 5 to 6 cm. broad: involucre 3—4-seriate ; scales 
of the involucre lanceolate, shorter than the flowers of the disk, acute, 
strongly squarrose, thickened at the base, ciliate, pubescent on the outer 
surface: ray-flowers neutral, about 20, yellow; pappus of slightly un- 
equal scales, more or less united, shorter than the triangular sterile 
achenes ; rays oblong, 1.5 cm. long, 6 mm. broad: disk-flowers numer- 
ous; pappus of two paleaceous awns with two or three intermediate 
scales, persistent: achenes strongly compressed, pubescent on both sur- 
faces, ciliate. —Mexico. State of Guerrero: mountains above Iguala, 
altitude 1230 m., 11 October 1900, O. G. Pringle, no. 8390 (hb. Gr.-). 
HELIANTHELLA QUINQUENERVIS, var. ARTzZONICA, Gray, Syn. Fl. i. 
pt. 2, 284. Specimens collected by E. W. Nelson, on the Sierra Madre 
of S. W. Chihuahua, Mexico, about 95 km. south of Guadalupe and 
Calvo, altitude 2000 to 2500 m., August, 1898, no. 4808 (hb. Gr., and 
hb. U. S. Nat. Mus.), are clearly to be referred to the variety arizonica 
of the above species. This variety does not seem to have been hitherto 
reported from Mexico. 
Verbesina madrensis. An herbaceous perennial: stems 4 to 
6 dm. high, winged below, naked or nearly so above: lower leaves 
opposite, the upper alternate, elliptic-oblong to oblong-lanceolate, 3 to 
10 cm. long, 1 to 4 cm, broad, obtuse, crenate-dentate, decurrent on the 
stem, hirsute-hispid on both surfaces especially above, prominently reticu- 
late-nerved: heads one to few, terminating the stem and branches on 
