Anisophyllea beccariana Baillon (1875: 311)

Chen, Xin, He, Hai & Zhang, Li-Bing, 2015, A monograph of the Anisophylleaceae (Cucurbitales) with description of 18 new species of Anisophyllea, Phytotaxa 229 (1), pp. 448-450 : 448-450

3. Anisophyllea beccariana Baillon (1875: 311) ( Figure 6 )

Type:— INDONESIA.? West Kalimantan: Borneo , 1865–1868, O. Beccari 1001 [lectotype K-000493121!, designated by Wong & Madani (1995: 18), isolectotypes FI-008732!, G-00441118!, P-00641657!] .

Trees to 25 m tall, trunk slender; bark rolled or scaly, inner bark brownish; sapwood yellowish; young branches terete, glabrous; buds glabrous. Leaves dimorphic, internodes between similar types of leaves 1.2–2.5 cm, between two adjacent different types of leaves 3–5 mm; small leaves caducous, only leaving small scars on twigs; large leaves petiolate, petiole 4–8 mm long, 1.4–1.7 mm in diam., glabrous; leaf blade elliptic to ovate, 6.5–11.0 cm long, 3–5 cm wide, base slightly oblique, acute to obtuse, apex acuminate to caudate, 0.8–2.0 cm long, margins often slightly revolute, thinly coriaceous, lustrous and bright green adaxially, dull and pale green abaxially, glabrous on both surfaces; main longitudinal veins 5–6, springing from blade base or ± from midrib a litter distance above blade base, midrib straight and bold, impressed adaxially and raised abaxially, lateral longitudinal main veins rather fine, outmost two lateral veins very close to blade margins and one often disappearing into blade margin when 6 main veins present, slightly prominent on both surfaces; transverse veins irregular, some of those from midrib and curved toward blade apex rather conspicuous and forming a pinnate-like venation; veinlets reticulate, slightly prominent on both surfaces. Inflorescence axillary or slightly supra-axillary, in serials, simple or proximally branched, with female and male flowers; rachis short, tenuous, 1.5–4.5 cm long, 0.4–0.6 mm in diam., pannose with yellowish hairs 0.1–0.2 mm long, remotely flowered with floral internodes 0.6–1.6 mm distant; bracts deltoid, 0.5–1.0 mm long, ca. 0.5 mm wide, glabrous adaxially, pannose abaxially, margins ciliate; flower buds pannose; flowers unisexual, 4-merous, brightly yellow; female flowers 2.0– 2.6 mm long, sessile or subsessile; receptacle obovate, 1.28–1.60 mm long, ca. 1 mm in diam., sparsely pannose; sepals deltoid, 0.6–1.0 mm long, nearly glabrous; petals oblong, ca. 0.6 mm long, slightly emarginate or shortly 2-lobed, margins incurved; staminodes 8, ca. 0.5 mm long; styles 4, free, ca. 0.6 mm long, base conical ca. 0.25 mm in diam., pubescent with brownish hairs, distally attenuate, apex recurved; male flowers to 1.5 mm long, hairy as female flowers; shortly pedicelled, pedicel 0.50–0.65 mm long; receptacle cup-shaped; sepals and petals similar to female flowers; stamens 8, episepalous 4 fertile, ca. 0.65 mm long, filaments compressed, anthers ca. 0.2 mm long, epipetalous 4 sterile and much shorter, ca. 0.5 mm long, glandular at apex; disk obscure; pistil rudimentary; styles 4, free, shortly subulate, ca. 0.3 mm long, apex recurved. Fruit unknown.

Flowering and fruiting: —Flowering in October to March, fruiting in April to August.

Habitat and distribution: —In lowland forests, especially mixed with Dipterocarpus C.F.Gaertner or in kerangas (heath) forests; below 600 m. Brunei; Indonesia (? West Kalimantan, Sumatra); Malaysia (Sabah, Sarawak); Singapore ( Figure 7 ) .

Vernacular names:— Pei (Kayan, Sarawak).

Taxonomic notes: —Although Anisophyllea beccariana has obvious longitudinal lateral veins, its transverse veins arising from the midrib are so prominent, which makes the venation somewhat pinnate-like. Baillon (1875) was quite right in that he compared this species with A. griffithii , but he did not attach importance of the pinnate-like venation of this species. Neither Ding Hou (1958) nor Wong & Madani (1995) used the character of venation in their keys to species. Morphologically this species differs from A. griffithii in having longer petioles, unisexual flowers, and glabrous young branches. In addition, this species often has longer and broader leaves than A. griffithii . Its distribution in Singapore is based on our examination of specimens cited below and that in Sumatra (unspecified province in CE Sumatra) follows Wong & Madnai (1995).

MONOGRAPH OF ANISOPHYLLEACEAE

Phytotaxa 229 (1) © 2015 Magnolia Press • 19

Additional specimens examined: — MALAYSIA. Sabah: Kampung Nalumad, 21 October 1996, Daim Andau 877 ( K). Sarawak: Baka National Park , Lintang path (north end), 12 August 1960, J. Sinclair & Kadim bin Tassim 10331 ( L, NY); Kuching, Semengoh F. R., 12.5 mile Penrissen Road, 13 March 1973, Othman Ismawi S. 32992 ( L) . SINGAPORE. Off 11.5 miles Mandai Road, 20 February 1954, J. Sinclair 40205 ( K, L, US); South side MacRitchie Reservoir, 24 April 1953, J. Sinclair 39586 ( L, US) .

20 • Phytotaxa 229 (1) © 2015 Magnolia Press

CHEN ET AL.

Figures

FIGURE 6. Anisophyllea beccariana Baillon. Flowering branch. (O. Beccari 1001; lectotype, K-000493121).

FIGURE 7. Geographical distribution of Anisophyllea beccariana Baillon.