Anisophyllea malayensis 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

37. Anisophyllea malayensis Li Bing Zhang, Xin Chen & H.He , sp. nov. ( Figure 72 )

Type:— MALAYSIA. Johor: Ulu Endau, Johore / Pahang Border , 31 March 1968, P. F. Cockburn FRI 8028 (holotype K-2008/ 0021852!, isotype L-0649552!) .

Diagnosis:— Anisophyllea malayensis is most similar to A. sumatrana in glandular leaves and flowers, but the former has inflorescence a supra-axillary spike, solitary; flowers sessile; leaves with transparent protuberant glands, while the latter has inflorescence a axillary raceme or with 2–3 basally branches; flowers with pedicels to 1 mm long; leaves with beef-red glands.

Trees to 18 m tall, 56 cm in diam.; bole straight, bark grayish, fissured, outer bark brittle, slashed inner bark pink and fibrous, exposed wood with yellow radial rays; young branches glandular and sparsely pubescent with hairs ca. 0.1 mm long, glabrescent when mature; buds pubescent as young branches. Leaves dimorphic, internodes between

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MONOGRAPH OF ANISOPHYLLEACEAE

Phytotaxa 229 (1) © 2015 Magnolia Press • 99 similar types of leaves 0.8–3.5 cm, between two adjacent different types of leaves 2–8 mm; small leaves caducous, only leaving small scars on twigs; large leaves petiolate, petioles to 7 mm long, 0.8 mm in diam., furrowed adaxially, glabrous and glandular; leaf blade elliptical-lanceolate or elliptic, 5–8 cm long, 2–3 cm wide, base slightly oblique, acute, apex acuminate with tips to 1 cm long, thinly coriaceous, glabrous and glandular on both surfaces with transparent protuberant glands 0.06–0.20 mm in diam., 0.16–1.30 mm distant; main longitudinal veins 4–5, springing from blade base, midrib straight and bold, impressed adaxially and raised abaxially, lateral veins rather fine, outermost two veins usually disappearing into blade margins, flat adaxially and slightly prominent abaxially; transverse veins irregular, those from midrib curved toward blade apex, as conspicuous as lateral main veins and resulting in ±pinnate-like venation; veinlets reticulate, visible but occasionally obscure adaxially and slightly prominent abaxially. Inflorescence a supra-axillary spike, solitary; rachis 2.0– 3.5 cm long, ca. 0.8 mm in diam., pannose with brownish hairs ca. 0.1 mm long (more densely hairy at base of flowers), remotely with 3–7 flowers (floral internodes 4–7 mm distant); flowers bisexual, 4-merous, to 4.8 mm long, sessile, slightly obovoid, glabrous and sparsely with beef-red or transparent glands outside; receptacle cylindric, 1.6–2.8 mm long, same in diam.; sepals deltoid, 1.6–2.0 mm long, 2.0– 2.5 mm wide at base; petals ovate, to 1 mm long, 0.5 mm wide, entire, minutely emarginate or shallowly 3–5-lobed at apex, fleshy, glandular on both sides; stamens 8, episepalous 4 fertile, ca. 0.83 mm long, filaments fleshy, linearly oblong, ca. 0.19 mm wide, anthers sub-globose, ca. 0.29 mm long, epipetalous 4 sterile, ca. 0.8 mm long; styles 4, free, to 1 mm long, base clavate, 0.2 mm in diam., distally attenuate. Fruit a drupe, rounded, flushed purple on top, elsewhere light green (immature).

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

Habitat and distribution: — Rain forests especially on ridge tops; below 360 m. Malaysia (Johor) ( Figure 73 ) .

Taxonomic notes: — Anisophyllea malayensis is very close to another newly described species in this paper, A. sumatrana , in that both of them have glands on leaves and flowers. However, this species has sessile flowers on supra-axillary spikes, transparent and protuberant glands on leaves, free eglandular styles, and pubescent young branches and buds, while A. sumatrana has pedicel flowers on axillary raceme, beef-red glands on leaves, basal connate and glandular styles, and pannose and farinose young branches and buds. It is also similar to A. griffithii in flower structures, in leaf blade shapes and in venations, but it can be easily distinguished from the latter by its glandular young branches, petioles, leaf blades (on both surfaces), and flowers (outside the receptacles and on both sides of petals). In addition, it has young branches and buds pubescent rather than pannose, petioles longer (to 7 mm long), and shorter rachis of inflorescences (mostly half the length as the latter species).

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Figures

FIGURE 72. Anisophyllea malayensis Li Bing Zhang, Xin Chen & H.He (Cockburn FRI 8028; holotype K-2008/0021852). —A. Flowering branch. —B. Flower. —C. Petal. —D. Episepalous stamen. —E. Epipetalous stamen. —F. Styles and disk (B–F drawn by Yueyang Wang & Fang Cui).

FIGURE 73. Geographical distribution of Anisophyllea malayensis Li Bing Zhang, Xin Chen & H.He.