Trema cannabina
Content
Description
Shrub or small much-branched tree up to 6 m, 15 cm ø.
Bark smooth, grey-brown.
Branchlets slender, spreading, often drooping, initially densely silvery-hairy, glabrescent and sparsely lenticellate.
Leaves chartaceous to thin-coriaceous, narrow ovate-caudate to broad ovate-acute, or elliptic-lanceolate, (3-)5-10(-13) by (l½-)2-4(-5 ½)cm (index 2-3 (-4)), broadest below or at the middle;
Stipules linear-lanceolate, 5-7 by 1-2 mm.
Inflorescence ♂ or ♂♀, with slender axes, 10-15-flowered, at anthesis lax, c. l-2½ cm long, densely greyish appressed-hairy;
Distribution
Asia-Temperate: Hainan (Hainan present), Asia-Tropical: Thailand (Thailand present), Australasia, Burma present, Melanesia present, Micronesia present, New Caledonia present, New Hebrides present, Pacific: Fiji (Fiji present); Samoa (Samoa present), Solomons present, Southern America: Argentina Northeast (Formosa present), W. Polynesia present
Burma, China, Formosa, Hainan, Indo-China, Thailand, common throughout Malesia to Australia, Melanesia (Solomons, New Caledonia, New Hebrides), W. Polynesia (Fiji, Samoa), and Micronesia.
Taxonomy
In Malesia there seem to be three rather but not completely distinct entities. These can be defined as follows: (i) specimens which have a completely glabrous, chartaceous and narrow-ovate leaf of (3-)5-8(-10) by (l ½ -)2-3(-4) cm with an index of 2½-3, more or less non-scabrate upper surface, and 2-3 lateral nerves (T. cannabina and T. virgata); (ii) specimens with a thin-coriaceous, narrow ovate-lanceolate to elliptic-lanceolate leaf of (6-)7-10(-12) by (1½-)2-3(-3½)cmi with an index of 4-5, slightly scabrate upper surface and sparsely hairy lower surface, and 4-5 lateral nerves which are straight and ascending and forming a narrow angle (less than 40°) with the midrib (T. timorensis, T. virgata var. scabra, and T. cannabina var. scabrd); (iii) those with a broad ovate and coriaceous leaf of (8-)9-l 1(-13) by (3-)4-4½(-5½) cm, with an index of 2½ -3, rugose and slightly scab-rate upper surface and sparsely pubescent beneath, and 3-4 lateral nerves forming a broad angle (more than 45°) with the midrib (T. glabrescens, T. viridis, and T. vieillardii). Various intermediates are however present, making it difficult to recognize them as distinct infra-specific taxa.
Citation
PLANCH 1873 – In: DC., Prod. 17: 197
DECNE 1873 – In: DC., Prod. 17: 196
SOEPADMO 1973 – In: Whitmore, Tree Fl.Mal. 2: 421
Miq. 1859 – In: Fl. Ind. Bat.: 216
SCHNEIDER 1917 – In: Sargent, Pl. Wils. 3: 289
HAND.-MAZZ. 1929 – In: Symb. Sin.: 106
BACK. & BAKH.F. 1965 – In: Fl. Java: 12
Miq. 1859 – In: Fl. Ind. Bat.: 217
PLANCH. 1848 – In: Ann. Sc. Nat.: 318
HEMSL. 1894 – In: J. Linn. Soc. Bot.: 452
GAGNEP. 1927 – In: Fl. Gen. I.-C.: 686
Li 1963: Woody Fl. Taiwan: 109
KURZ 1877 – In: For. Fl. Burma: 469
PLANCH. 1848 – In: Ann. Sc. Nat.: 317
Corner 1940: Ways. Trees: 694
PLANCH 1873 – In: DC., Prod. 17: 202
Miq. 1859 – In: Fl. Ind. Bat.: 216
Merr. 1917: Int. Rumph.: 187
DECNE 1873 – In: DC., Prod. 17: 198
PLANCH. 1873 – In: DC., Prod. 17: 196
J. J. SMITH 1910 – In: K. & V., Bijdr. 12: 652
HAND.-MAZZ. 1929 – In: Symb. Sin.: 107
Hook.f. 1888 – In: Fl. Br. Ind.: 483
Merr. 1935 – In: Trans. Am. Phil. Soc.: 131
LAUT. 1913 – In: Bot. Jahrb.: 313
LAUT. 1913 – In: Bot. Jahrb.: 318
PLANCH. 1873 – In: DC., Prod. 17: 195
DE WIT 1949 – In: Bull. Bot. Gard. Btzg: 184
LAUT. 1913 – In: Bot. Jahrb.: 317
Ridl. 1924 – In: Fl. Mal. Pen.: 319