| Dicotyledon | Literature for Spermacoce remota
Wagner et al., 1990, 1999. |
| Rubiaceae -- The Coffee Family | Bibliography |
| Spermacoce remota | |
Common name(s): buttonweed |
| General Information | ||
|---|---|---|
| Distribution | Native from Florida south to Central and South America and the West Indies, now widely naturalized.In the Hawaiian Islands, naturalized on Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i. | |
| Habit |
Annual or short-lived perennial herbs; stems often purple-tinged, erect or sprawling, 3-10 dm long, glabrous or sparsely retrorsely puberulent in lines on the angles. |
|
| Leaves |
Leaves often purple-tinged, opposite, narrowly elliptic, elliptic-lanceolate, or ovate, 1-7 cm long, 0.4-3 cm wide, glabrous except puberulent near margins, giving a slightly scabrid texture, apex acute to attenuate-acute, base rounded to cuneate, petioles 2-4 mm long, stipules 2-3 mm long, with 5-7 slender, unequal setae 2-5 mm long, stipules of flower-bearing nodes with numerous setae. |
|
| Flowers |
Flowers numerous in axillary and terminal, dense, sessile clusters, stipule-derived bracteoles with setae 2-3 mm long; hypanthium obconical, 2-2.5 mm long; calyx lobes deltate, ca. 0.6 mm long, ciliate, separated by a fringe; corolla white or lobes tinged pink, 2.4-2.6 mm long. |
|
| Fruit |
Fruit ellipsoid or obovoid-fusiform, 2-4 mm long, pubescent in upper part, dehiscent, the valves bifid, falling completely away. |
|
| Seeds |
Seeds dull dark brown, oblong-ellipsoid, 1.5-2.5 mm long, transversely sulcate. |
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