. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. Genus 38. CARROT FAMILY. 38. CENTELLA L. Sp. PI. Ed. 2, 1393. 1763. Perennial herbs (some African species shrubby), ours with prostrate stems rooting and sending up tufts of long-petioled leaves at the nodes, together with 1-3 long-rayed umbellets of small white flowers, the true umbel sessile. Petiole-bases sheathing. Bracts of the invo- lucels 2-4, mostly prominent.
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. Genus 38. CARROT FAMILY. 38. CENTELLA L. Sp. PI. Ed. 2, 1393. 1763. Perennial herbs (some African species shrubby), ours with prostrate stems rooting and sending up tufts of long-petioled leaves at the nodes, together with 1-3 long-rayed umbellets of small white flowers, the true umbel sessile. Petiole-bases sheathing. Bracts of the invo- lucels 2-4, mostly prominent. Calyx-teeth none. Disk flat, or slightly concave. Styles filiform. Fruit somewhat flattened laterally, orbicular, rcniform, or obcordatc, rather promi- nently ribbed, the ribs mostly anastomosing; oil-tubes none. [Latin, diminutive of centrum, a prickle.] . 20 species, of wide distribution, most abundant in South Africa. The following is the only one occurring in North America. Type species: Centella villosa I. Centella asiatica (L.) Urban. Ovate- leaved :Marsh-Pennywort. Fig. 3160. Hydrocotyle asiatica L. Sp. PI. 234. 1753. Hydrocntyle refanda Pers. Syn. i: 302. 1805. C. asiatica Urban in Mart. FI. Bras. 11 : 287. 1879. Centella repanda Small, Fl. SE. U. S. 859. 1903. Stem creeping, glabrous or somewhat pubescent, l'-6' long. Petioles 3-12' long, sometimes pubes- cent; blades ovate, rather thick, very obtuse and rounded at the apex, broadly cordate at the base, not peltate, I'-li' long, g'-is" wide, repand-dentate; pedicels much shorter than the leaves. i'-2' long; umbels capitate, 2-4-flowered, subtended by 2 ovate bracts; flowers nearly sessile; fruit 2"-2*" broad, about li" high, prominently ribbedr'and reticulated when mature. In wet grounds, Maryland to Florida, west to Texas. Also in Bermuda, insular and continental tropical Amer- ica, and Old World tropics. June-Sept. 39. SPERMOLEPIS Raf. Xeog. 2. 1825. [ Xutt.; DC. Mem. Omb. 39. 1
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
