B. mcphersonii

Culture

Original Botanical Description or Link to

http://www.phytoneuron.net/74PhytoN-Begonia.pdf New Species and notes on Begonia (BEGONIACEAE) from Mexico and Central America, KATHLEEN BURT-UTLEY and JOHN F. UTLEY: “Rhizomatous herbs; internodes 0.5–1.6 cm, 0.4–1.3 cm diam, lanate with fine sericeous trichomes 1.5–5 mm. Stipules persistent, coriaceous, asymmetrically ovate, 1.2–2.7 x 1–1.1+ cm, marginally entire, glabrous keeled, or the keel only pilose, cystospheres abundant; petioles (10.5–)13– 23 cm, tomentose with fine sericeous villi 1.5–4 mm; leaf blades oblique to transverse, symmetric to asymmetric, elliptic to oblong in outline, 10.5–18 x 8–17.5 cm, basally cordate, apically with no distinct apex, marginally ciliate-serrate and ciliate-serrulate, deeply asymmetrically palmately lobed usually with 4 to 5 major attenuate-acuminate lobes to ½ the blade length, sparingly pilose above especially above the petiole-blade junction, lanate on primary nerves below but pubescence less dense in intercostal regions; 10–11-palmatinerved. Inflorescences greatly exceeding the foliage, weakly asymmetric, densely to laxly cymose with elongate branches, many flowered; peduncles (21–)30–49 cm, lanate to pilose; bracts caducous, the lowermost apparently completely encircling the inner in bud, subequal, broadly navicular, broadly ovate, 1.7 x 1.4 cm, pilose, cystospheres abundant. Staminate flowers with pedicels 9–10.5 mm, pilose; sepals ovate, 5–7 x 7–9 mm, pilose, pink-white; petals 0–2, narrowly obovate to ovate, 4.5–6 x 1.2–1.5 mm; stamens 23–35; filaments 0.5–0.8 mm, on a raised torus and appearing somewhat monadelphous; anthers obovate to elliptic, 1–1.4 x 0.4–0.5 mm. Pistillate flowers with pedicels 6–8 mm, pilose; bracteoles wanting; sepals suborbicular to transversely broadly elliptic, (5.5–)8–9 x 8–9.5 mm, pilose, pink-white; petals 0–1, obovate, 6 x 2.5–3 mm; ovary trilocular with bipartite placentae, 3.5–4.5 mm, pilose, cystospheres present; styles 3, 1.5– 2 mm, connate over ½ their length; stigmas bicornute. Capsules with pedicels 13–19 mm; bodies 6–7.5 mm with conspicuous cystospheres; locule chambers externally ovate, 5–6.5 x 3.5–5.5 mm; wings 3, unequal, the largest wing asymmetrically elliptic, 11–14.5 x 8–10.5 mm, the second one asymmetrically triangular, 5–7 x 5–6 mm and the third marginiform.”