Myrsine ronuiensis (Grant) Fosberg & Sachet

Rapanea ronuiensis Grant

Arbor parva, ramulis novellis ferrugineo-puberulis mox glabrescentibus; folia sessilia vel petiolata, petiolis latis ad 5 (–7) mm longis, laminis obovatis saepe falcatis 5–9 cm longis 2.3–3.8 cm latis basi cuneatis vel parum attenuatis apice obtusis vel rotundatis pergameneis virentibus haud nitentibus punctatis juvenilibus ciliolatis mox glabrescentibus; umbellae 5–7-florae, pedicellis glabris 0.5–1.5 mm longis; flores masculini ignoti, hermaphroditi 1.8 mm longi; perianthium Iutei-viride; calyx tubo 0.5 mm longo lobis deltoidei-ovatis 0.5–0.7 mm longis obtusis vel rotundatis glandulosi-ciliolatis vel nudis; corolla calycem bis superans tubo 0.5 mm longo lobis ovatis 1 mm longis obtusis ciliolatis intus ad apices tomentellis; antherae 0.8 mm longae connectivo obscuro; ovarium ovatum 1 mm longum, stigma pyramidale 3–4 angulatum; fructus ignoti.

Small tree. Flowering branches 2.5–3 mm in diameter, brown. Young twigs ferrugineous puberulent and young leaves ciliate, both soon glabrous. Leaves clustered at the tips of the branches. Petioles broad, to 5 (–7) mm long, or leaves sessile. Blades obovate, often falcate, 5–9 × 2.3–3.8 cm, cuneate or somewhat attenuate at the base, obtuse to rounded at the tip; pergameneous, dull, dark green with a gray cast, punctate-lined and dotted (orange-pellucid in transmitted light); midrib 1 mm in diameter at base, lateral veins about 25, not prominent. Umbels borne mainly below the leaves, on minute (0.5 mm long) branches, 5–7-flowered. Pedicels glabrous, 0.5–1.5 mm long. Male flowers unknown. Perfect flowers 1.8 mm long. Perianth yellowish green, red and black punctate with lines and dots. Calyx tube 0.5 mm long; lobes deltoid-ovate, 0.5–0.7 mm long, obtuse to rounded, glandular-ciliolate to nude. Corolla twice as long as the calyx, tube 0.5 mm long, lobes ovate, 1 mm long, obtuse, ciliolate, tomentulose within. Anthers 0.8 mm long, acutish, subsessile, rose in color, with dark connective. Ovary ovoid, 1 mm long; stigma sessile, pyramidal, 3–4-angled, usually unlobed but very variable as to shape, 0.8 mm long. Fruit unknown.

Affinities are with R. collina from which it differs most conspicuously in the sessile or broadly short-petioled obovate leaves, and the subsessile flowers with smaller anthers. The leaves are of a darker duller gray-green, a color I have seen in no other Rapanea, and the flowering twigs are thicker. From R. nadeaudii it differs in the many-flowered inflorescence and the subsessile flowers.

TYPE.—Collected by Grant in Tahiti in 1930.

RANGE.—Society Islands: Tahiti-iti: Grant 3905, Teahupoo, Mt. Ronui, alt. 860 m (2815 ft), in Weinmannia-Ascarina-etc. forest, 2 July 1930, flower (BISH, type; MIN). Apparently only one other collection of Rapanea is known from the lesser peninsula of Tahiti (R. ovalis).

Myrsine ronuiensis (Grant) Fosberg & Sachet

Rapanea ronuiensis Grant in Grant, Fosberg, and Smith, Smithsonian Contr. Bot. 17:19, 1974.

Described from and endemic to Tahiti.

Myrsine ronuiensis is a species of plant in the family Primulaceae. It is a tree endemic to the Society Islands of French Polynesia.

Myrsine ronuiensis là một loài thực vật thuộc họ Myrsinaceae. Đây là loài đặc hữu của Polynésie thuộc Pháp.