|
(Last Modified On 3/12/2013)
|
|
|
|
(Last Modified On 3/12/2013)
|
|
Species
|
SIDA RHOMBIFOLIA L.
|
|
PlaceOfPublication
|
Sp. P1. 684. 1753.
|
|
Description
|
Herb or shrub up to 1.5 m high, the stem erect, usually profusely branched. minutely stellate-puberulus, infrequently also hirsute with mostly simple hairs, ultimately glabrescent. Leaves short-petiolate, the petiole usually ca 5 mm long, more or less densely stellate-puberulus and sometimes also hirsute, the stipules subulate, 5-10 mm long, more or less persistent; blade often more or less rhombic, narrowly ovate, narrowly oblong-elliptic, or narrowly oblong-obovate, cuneate to obtuse at the base, obtuse or acute at the apex, serrate or serrulate above the base at the margin, varying much in size, 1.5-8.5 cm long or sometimes shorter and 0.6-3.5 cm broad, 3(-5)-palminerved, discolor, shortly and sparsely stellate- puberulus or almost glabrous on the dark green upper surface, more or less densely and minutely stellate-puberulus to stellate-tomentellous and infrequently also hirsute especially along the main veins on the pale lower surface, the main veins prominent beneath. Flowers axillary and solitary, those toward the apex of the branches and branchlets often corymbose, the pedicel short to usually elongate and up to 3.5 cm long, filiform, articulated generally above the middle, minutely stellate-puberulus and sometimes also hirsute, the fruiting pedicel slightly longer; calyx campanulate, subplicate-5-angulate, ca 6(9) mm long, foliaceous, green, with the 5 midribs and 5 commissural ribs markedly thickened and yellowish at the base, minutely stellate-tomentellous, sometimes also hirsute especially on the ribs and along the margins, moderately accrescent, the lobes deltoid, acuminate, ca 3(5) mm long and broad at the base; petals broadly ovate, strongly oblique, unguiculate, slightly emarginate at the apex, 7-8.5(15) mm long and 5-6(13) mm wide, yellow or sometimes orange or white, the claw minutely tomentellous; androecium ca 5.5(9) mm long, the staminal tube ca 3.5(6) mm long, sparsely and minutely stellate-puberulus; styles ca 4(8) mm long, connate basally for ca l/2 of their length or less. Mericarps (7)8-12(14), triquetrous, 2.2-5.5 mm long (the beaks included), chartaceous, the dorsum with the lower part rugose-reticulate, and with the upper part with 2 longitudinal crests, each terminating into a beak 0.2-2.5 mm long, the lateral walls more or less rugose-reticulate, glabrous or with very minute stellate hairs on crests and beaks; seeds trigonous-subrotund, ca 2 mm long, smooth, glabrous but minutely whitish-pilose near the hilum.
|
|
Habit
|
Herb shrub
|
|
Distribution
|
A polymorphic, widely distributed weed in tropical and subtropical regions of both hemispheres; savannas, roadsides, moist thickets, brushy fields and slopes, wooded swamps, and gravel bars; known in Panama as escobilla or hierba de puerco;
|
|
Note
|
according to Standley (Contr. U. S. Nat. Herb. 27: 254. 1928), it "is a plant to be avoided if one does not like ticks.
|
|
Specimen
|
BOCAS DEL TORO: region of Almirante, research grounds, Cooper 85 (F). CANAL ZONE: Chagres, Fendler 13 (MO, US), 14 (MO, US), 18 (MO, US); vic of Fort Sherman, Stand- ley 30990 (US); Gatun, Bro. Heribierto 119 (US); hills W of the Canal, nr Gatun, Stand- ley 27297 (US); Barro Colorado Island, Ebinger 226 (MO); vie of Frijoles, Piper 5780 (US); Navy Reservation, N of Gamboa, A. Robyns 65-57 (MO); Empire to Mandinga, Piper 5503 (US); Summit, Standley 26919 (US); around Culebra, alt 50-150 m, Pittier 2219 (US); hills E of Curundu, Harvey 5205 (F); Albrook, Dwyer & A. Robyns 179 (MO); Ancon Hill, 7. M. & M. T. Greenman 5013 (MO), 5121 (MO); Balboa, Standley 32132 (US); hills between Rio Grande and Pedro Vidal, on road to Arraijan, alt 50-150, Pittier 2713 (US). CHIRIQUI: trail from Paso Ancho to Monte Lirio, upper valley of Rio Chiriqui Viejo, alt 1500-2000 m, Allen 1509 (F, MO, US); Finca Lerida to B-oquete, alt ca 1300- 1700 m, Woodson -et -a. 1136 (F, MO). COCLE: Aguadulce, nr sea level, Pittier 4885a (US); El Valle de Anton, trails nr Finca Tomas Arias, alt 600 m, Allen 4231 (MO). COLON: be- tween France Field, Canal Zone, and Catival, Standley 30209 (US); Portobello, Ebinger 120 (MO). DARIEN: headwaters Rio Chico, alt 500-700 ft, Allen 4618 (MO). HERRERA: OCU', Ebinger 1074 (MO). PANAMA: Las Sabanas, N of Panama City, Bro. Paul 573 (US); Bella Vista, Standley 25394 (US); nr Matias Hernandez, Standley 28896 (US); between Matias Hernandez and Juan Diaz, Standley 32087 (US); vie of El Llano, Duke 5800 (MO); Las Delicias, Carleton 46 (US); San Jose Island, Johnston 811 (GH), 836 (GH). SAN BLAS: forests around Puerto Obaldia, alt 0-50 m, Pittier 4381 (US), 4382 (US). PROVINCE UN- KNOWN: Stork 151 (US).
|
|
Note
|
The collection Allen 1509 (Chiriqui), with exceptionally large flowers-calyx ca 9 mm long, petals ca 15 mm long and 13 mm broad, androecium ca 9 mm long, and styles ca 8 mm long-can, perhaps, be considered as a distinct variety.
|
|
Tag
|
|
|
|
Project Name
|
|
Tag
|
|
|
|