Comprehensive Description
provided by North American Flora
Vernonia jaliscana Gleason, Bull. N. Y. Bot Gard. 4: 198. 1906.
Stems suffrutescent, erect, 1 m. high, simple to the inflorescence, scabrellate or becoming
glabrous; leaf-blades thick, coriaceous, usually pale-green, elliptic-oblong or ovate-oblong,
7-11 cm. long, 2.5-4.5 cm. wide, obtuse or subacute, entire or undulate, obtuse to rounded or
subcordate at base, scabrous, especially above, and minutely pitted on both sides; petioles
about 5 mm. long; inflorescence hemispheric or depressed, pubescent; heads 18-21 -flowered;
involucre broadly campanulate, 7 mm. high; scales closely but irregularly imbricate, glabrous,
purple-tipped, the outermost spreading or recurved, lanceolate, cuspidate, the inner appressed,
narrowly oblong, attenuate or sharply acute, mucronulate; achenes 2.5 mm. long, glabrous
and densely glandular; pappus nearly white, the bristles 7-8 mm. long, the scales irregular,
ciliate, 0.9-1.1 mm. long.
Type locality: Guadalajara, Jalisco. Distribution: Jalisco.
- bibliographic citation
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Vernonia serratuloides H.B.K. Nov. Gen. & Sp. 4: 33. 1818
Perezia paniculata A. Gray, Proc. Am. Acad. 21: 393. 1886.
Cacalia serratidodes Kuntze, Rev. Gen. 970. 1891.
Vernonia umbellifera Gleason, Bull. N. Y. Bot. Gard. 4: 199. 1906.
Stems erect, suffrutescent, freely branched above, glabrous or puberulent; leaf-blades thick, firm, narrowly lanceolate to oblong, 5-10 cm. long, 1-3 cm. wide, or the upper smaller, acute Or acuminate, entire or irregularly serrate, frequently somewhat revolute, scabrellate or glabrous and minutely pitted above, pubescent or puberulent and minutely pitted beneath, short-petioled; inflorescence subhemispheric to pyramidal, 1 dm. wide; heads 8-1 1-flowered; involucre campanulate, 7-8 mm. high; scales loosely and irregularly imbricate, erect or appressed, purple-tipped, subacute to short-acuminate, cuspidate, frequently glandular, the outer ovate, thinly ciliate, the inner oblong, glabrous or nearly so; achenes 2.5 mm. long, glandular, glabrous or puberulent; pappus pale-brown, the bristles 6.5 mm. long, the scales narrowly linear, irregular, 0.5-1 mm. long.
Type locality: Valladolid [Morelia], Michoacan, alt. 1900 meters. Distribution: Chihuahua to Jalisco.
- bibliographic citation
- Per Axel, Rydberg. 1922. CARDUALES; AMBROSIACEAE, CARDUACEAE. North American flora. vol 33(1). New York Botanical Garden, New York, NY