A revision and one new species of Begonia L. (Begoniaceae, Cucurbitales) in Northeast India Author Camfield, Rebecca Royal Botanic Gardens Edinburgh, 20 a Inverleith Row, Edinburgh, EH 5 3 LR, United Kingdom. RCamfield@rbge.org.uk Author Hughes, Mark Royal Botanic Gardens Edinburgh, 20 a Inverleith Row, Edinburgh, EH 5 3 LR, United Kingdom. MHughes@rbge.org.uk text European Journal of Taxonomy 2018 2018-01-19 396 1 116 journal article 10.5852/ejt.2018.396 2b95a851-e1bf-4bdd-9cce-441ddc4135d2 2118-9773 3787049 Begonia shilendrae Rekha Morris & P.D.McMillan [sect. Platycentrum ] Fig. 56 ; Table 1 The Begonian 79 (3–4): 63 ( Morris & McMillan 2012 ) . – Type : India , Arunachal-Pradesh , Itanagar , 3 Apr. 2005 , Morris AR1 ( holo- : CLEMS ) . Fig. 56. Map showing the location of B. shilendrae Rekha Morris & P.D.McMillan specimens. Other material INDIA : Arunachal-Pradesh : Itanagar, 3 Apr. 2005 , Morris AR-1A (CLEMS) ; ibid., 3 Apr. 2005 , Morris AR-1B (CLEMS) ; ibid., 3 Apr. 2005 , Morris AR-1C (CLEMS) ; ibid., 17 Dec. 2005 , Morris AR108 (CLEMS n.v.) ; ibid., 17 Dec. 2005 , Morris AR109 (CLEMS n.v.) ; ibid., 17 Dec. 2005 , Morris AR110 (CLEMS n.v.) ; ibid., 17 Dec. 2005 , Morris AR111 (CLEMS n.v.). Description Rhizomatous, monoecious herb, 20–50 cm high. Rhizome: 10–20 mm wide, glabrous, internodes 5–25 mm long. Stipules: unseen. Leaves: petiole up to 40 cm , densely to sparsely villose; lamina broadly ovate, basifixed, base shallowly cordate to truncate, 18–35 × 8–30 cm , slightly asymmetric, upper surface matt green, glabrous, underside green, pubescent on veins near petiole, venation palmate; margin very deeply lobed, with 5–7 lobes, entire, glabrous; apex acuminate. Inflorescence: panicle or raceme of cymes, terminal, few; peduncle glabrous with hairs near base, branching 1–3 times, primary 10–30 cm long, secondary and tertiary ca 1 cm , up to 15 flowers; bracts unseen. Male flower: pedicel 5–15 mm long, glabrous; tepals 2; outer tepals cordate-ovate, 5–10 × 4–6 mm , rose pink to pale pink, glabrous, margin entire; androecium with 30–40 stamens, symmetric; filaments 1–3 mm long; fused at base; anther globose, 1 mm long, not hooded, connective not extended. Female flower: pedicel 10– 35 mm long, glabrous; bracteoles absent; tepals 2, ovate, 5–10 × 4–9 mm , rose pink to pale pink, glabrous, margin entire; ovary 2(–3)-locular, placentae bifid; capsule oblong-elliptic, with one long oblong wing and two very small oblong wings; styles 2–3, forked once and twisted once, persistent. Fruit: recurved; capsule elliptic, 9–13 × 3–5 mm , glabrous; wings extending along the pedicel and in front of capsule, unequal; longest wing rounded triangle, 15–20 × 10–14 mm ; shortest wings oblong, 1–2 × 11–17 mm . Distribution and phenology Endemic to Arunachal-Pradesh; ca 450 m . Flowering: December to January; fruiting: December to February. Conservation status Data Deficient. Begonia shilendrae is only known from the type location in the lower mountains of Arunachal-Pradesh. Remarks The description is based on the protologue and photographs of the type ; the notes therein describe the species as protandrous. This species is vegetatively similar to B. sikkimensis and B. koelzii in terms of having lacerate leaves; see notes under those species.