|
(Last Modified On 6/14/2013)
|
|
|
|
(Last Modified On 6/14/2013)
|
|
Species
|
Heliopsis buphthalmoides (Jacq.) Dunal
|
|
PlaceOfPublication
|
Mem. Mus. Hist. Nat. 5: 57. 1819.
|
|
Synonym
|
Anthemis buphthalmoides Jacq., Hort. Schoenb. 2: 13, tab. 151. 1797. TYPE: not seen.
|
|
Description
|
Perennial herb to 38 cm tall; stems ascending, to 0.3 mm diam., glabrous below to sparsely pilose above with hairs to 0.5 mm long. Leaves narrowly ovate to ovate, 3.9-7.5 cm long, 1.9-5.4 cm wide, acute, the base obtuse to slightly attenuate, both surfaces strigillose with hairs 0.1 mm long, the margin serrate; petioles 0.5-3 cm long, 0.8 mm diam. Inflorescence of solitary heads; peduncles 9-14 cm long. Heads radiate, 7-9 mm tall, 15-20 mm across; involucre 9-13 mm diam., biseriate, the outer bracts herbaceous, narrowly ovate to elliptic, 5-6 mm long, 1.3-2 mm wide, obtuse, the abaxial surface strigillose toward the apex with hairs 0.1-0.2 mm long, the inner bracts more scarious and strigillose, but the same size and shape as the outer bracts; paleas narrowly elliptic, 4 mm long, 1.2 mm wide, obtuse, glabrous; ray florets 8-12, the ligules persistent on achene at maturity, yellow above, greenish below, narrowly elliptic, 4-6 mm long, 2.5 mm wide, the tube absent; disc florets over 50, perfect, the corollas yellow, cylindrical, 2.5 mm long, 0.8 mm diam., glabrous, the anthers 5, black. Ray and disc achenes similar, black, triquetrous, 3 mm long, 1.5 mm diam., glabrous; pappus absent. Chromosome numbers n = 14 and 28.
|
|
Habit
|
herb
|
|
Note
|
Perhaps the most conspicuous and distinguishing features of this species are the long peduncles with solitary heads, the ligules persistent on the ray achenes, and the involucral bracts all approximately the same length. In Panama flowering specimens have been collected in February, March, and July.
|
|
Specimen
|
CHIRIQUI: Alto Lino, 40,00 ft, Maurice 878 (US). El Boquete, 100OL-13O0 m, Pittier 2960 (US). Near Bajo Mona and Quebrada Chiquero, 1500 mn, Woodson & Schery 530 (GH, MO).
|
|
Tag
|
|
|
|
Project Name
|
|
Tag
|
|
|
|