Anisophyllea glandibeccariana Li Bing Zhang, Xin Chen & H.He, 2015

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

25. Anisophyllea glandibeccariana Li Bing Zhang, Xin Chen & H.He , sp. nov. ( Figure 48 ).

Type:— MALAYSIA. Sarawak: Gunung Buri, 75th mile.1 st /2 nd Division boundary, 750 m, 21 September 1975, P. J. Martin & O. Ismawi S. 36913 (holotype MO-2728085 !, isotype L-0520552!) .

Diagnosis:— Anisophyllea glandibeccariana is most similar to A. insularis in its eglandular Flowers, but the former has flowers polygamous, bisexual flowers sessile, 2.2–3.0 mm, male flowers to 1.6 mm long, with pedicels to 1 mm long; styles of bisexual flowers pubescent; young branches and buds pubescent. In contrast, the latter has flowers bisexual, sessile, 1.1–1.3(–2) mm long; styles glabrous; young branches and buds pannose.

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MONOGRAPH OF ANISOPHYLLEACEAE

Phytotaxa 229 (1) © 2015 Magnolia Press • 71 Trees to 24 m tall, 56 cm in diam.; bark grayish, young branches pubescent with brown patent hairs ca. 0.25 mm long, and also with transparent protuberant glands; buds sparsely pubescent. Leaves dimorphic, internodes between similar types of leaves 1.3–3.0 cm, between two adjacent different types of leaves 3–7 mm; small leaves caducous, only leaving very small scars visible on young branches; large leaves petiolate, petioles to 5 mm long, 1.2 mm in diam., furrowed adaxially, pubescent as young branches when young, glabrescent when mature, glandular; leaf blade elliptic or ovate, 5.5–9.0 cm long, 3–4 cm wide, base slightly oblique, acute, apex acuminate or caudate with tips to 1.2 cm long, margins often slightly revolute, chartaceous or thinly coriaceous, glabrous on both surfaces, densely glandular with transparent protuberant glands 0.06–0.10 mm in diam., 0.10–0.54 mm distant; main longitudinal veins 5, springing from blade base, midrib straight and bold, impressed adaxially and raised abaxially, lateral main veins rather fine and close to blade margins, outermost two veins nearly confluent with blade margins, slightly prominent on both surfaces; transverse veins irregular, ones from midrib curved towards blade apex and as conspicuous as lateral main veins, hence resulting in a pinnate-like venation; veinlets reticulate, slightly prominent on both surfaces. Inflorescence axillary, supra-axillary or at base of young branches, in serials, usually branched at base, with bisexual and male flowers in same inflorescence; rachis to 4.5 cm long, 0.4 mm in diam., pannose with brownish hairs ca. 0.25 mm long, rather remotely with flowers (floral internodes 0.6–2.5 mm long); bracts lanceolate, 0.5–1.1 mm long, 0.3 mm wide, glabrous adaxially, pannose abaxially, margins ciliate; flowers polygamous, 4-merous, bright yellow; bisexual flowers 2.2–3.0 mm long, sessile, sparsely pubescent outside with brownish hairs 0.06–0.10 mm long; receptacle cylindric, 1.0– 1.2 mm long, to 1.2 mm in diam.; sepals deltoid, 1.2–1.6 mm long, apex acute; petals oblong, ca. 0.5 mm long, 0.3 mm wide, slightly emarginate at apex, margins incurved; stamens 8, episepalous 4 fertile, ca. 0.65 mm long, filaments fleshy, subulate, anthers sub-globose, ca. 0.19 mm long, epipetalous 4 sterile, ca. 0.5 mm long; disk 8-lobed, crenulate; styles 4, free, to 1 mm long, base conical ca. 0.32 mm in diam., distally attenuate and recurved, pubescent; male flowers to 1.6 mm long, shortly pedicelled, pedicels 0.6–1.0 mm long, hairy as rachis; sepals ca. 0.8 mm long, same wide at base, hairs same as those on bisexuals; petals and stamens as in bisexual flowers; pistil rudimentary; styles 4, free, subulate, ca. 0.3 mm long. Fruits unknown.

Flowering and fruiting: —Flowering in September; fruiting time unknown.

Habitat and distribution: — In rain forests; 150–750 m. Indonesia (Central Kalimantan, West Kalimantan?); Malaysia (Sarawak) ( Figure 49 ) .

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Taxonomic notes: — Anisophyllea glandibeccariana also shares similar morphological features of leaves, inflorescences, and flower structures with A. beccariana ; however, it differs obviously from the latter by its pubescent young branches and buds, its glandular coverage on young branches, its petioles and both surfaces of leaf blades.

The epithet is from the combination of a Latin word glandi- and an epithet of a known species A. beccariana , referring to morphological similarity of the two species and the distinctively glandular young branches and leaves of this new species.

Additional specimens examined: — INDONESIA. Central Kalimantan: Bukit Raya , 00°45’00”S 112°47’00”E, c. 150 m, 06 November 1983, 5015 ( L); Provinces not located in Borneo: Without locality, 07 February 1995, Chuich A. C ., Mahyar U. W ., Afriastini 1764 ( K). Provinces not located other than Borneo ? Archipel Ind., 10 July 1921, Momtri Remvorin bb2294 ( L) .

Figures

FIGURE 48. Anisophyllea glandibeccariana Li Bing Zhang, Xin Chen & H.He (Martin & Ismawi 36913). —A. Flowering branch. —B. Bisexual flower. —C. Male flower. —D. Petal. —E. Episepalous stamen. —F. Epipetalous stamen. —G. Styles and disk of bisexual flower. —H. Styles and disk of male flower (B–H drawn by Jing Chen & Fang Cui).

FIGURE 49. Geographical distribution of Anisophyllea glandibeccariana Li Bing Zhang, Xin Chen & H.He.