Celtis rubrovenia Elmer

Species

Angiosperms > Rosales > Cannabaceae > Celtis

Characteristics

Deciduous tree up to 30 m, 60 cm ø. Bark grey-brown, smooth. Innovations densely rufous appressed-hairy, glabrescent. Older branchlets glabrous, sparsely lenticellate. Buds ovoid-conical, c. 3 by 2 mm, bracts ovate,imbricate, c. 1 by ½ mm. Stipules subulate, c. 3-4 by 1 mm. Leaves (fully developed ones) thick-coriaceous, rigid, brittle, ovate to ovate-elliptic, (3-)4-5(-6½) by (1½-) l½-2½(-3½) cm, index 2-3.3; sparsely appressed-hairy especially on the midrib and nerves, glabrescent; base attenuate-rounded to rounded, symmetrical to asymmetrical; margin of young leaves serrate to crenate at least at the upper half, that of old leaves entire or distantly serrate in the upper half only; apex acute, acuminate to caudate, tip usually very sharp; midrib and nerves strongly raised beneath (reddish in fresh specimens), impressed above; nerves (l-)2(-3) pairs, arcuating, ascending, at a narrow angle with the midrib less than 45°, lowest pair running to c. ⅔ the length of the leaf; reticulations fine, subareolate, obscure on both surfaces; petiole (3-)4-6(-8) by 1 mm, deeply sulcate. Flowers 4-merous. Inflorescences ♂ or ♂ ⚥, racemose, 1-2 cm long, 4-7-flowered. ♂ Inflorescence borne on the lower and leafless parts of the new shoot, 5-7-flowered; ♂ flower c. 2 mm ø; perianth lobes c. 1½ by 1 mm, ciliate; filaments l-1½ mm long, anthers reniform, c. 1 by ¾ mm; pistillode minute. Mixed (♂⚥) inflorescences 4-5-flowered, borne in the axil of new leaves; ⚥ flower borne on the upper part of the inflorescence, c. 2-2½ mm ø; perianth lobes c. 1½-2 by 1 mm, ciliate; stamens slightly smaller in size than those of the ♂ flower; ovary ovoid, 1½-2 by 1 mm, densely hirsute; stigmatic arms spreading, l½-  long. Infructescences up to 1½ cm long, carrying (l-)2(-3) fruits. Fruit globose, c. 3 by 3 mm, glabrous, ± 4-angular. Endosperm scanty, oily, transparent. Embryo curved, hypocotyle ascending; cotyledons equal, foliaceous, folded.
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Growth form tree
Growth support free-standing
Foliage retention evergreen
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Mature height (meter) 30.0
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Environment

In primary forests on hills, ridges between 500-1800 m. In New Guinea sometimes rather common locally. Fl. fr. Sept.-March.
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Hardiness (USDA) 8-12

Usage

Uses fuel material social use
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Cultivation

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Distribution

Celtis rubrovenia world distribution map, present in Indonesia, Philippines, and Papua New Guinea

Identifiers

LSID urn:lsid:ipni.org:names:837016-1
WFO ID wfo-0000593724
COL ID 69GJN
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Celtis rubrovenia Celtis similis