Homalium sect. Pierrea (Hance) Warb.

Applequist, Wendy L., 2016, A reconsideration of the infrageneric classification of Homalium Jacq. (Salicaceae), Candollea 71 (2), pp. 231-256 : 253-254

7. Homalium sect. Pierrea (Hance) Warb.

in Engler & Prantl, Nat. Pflanzenfam. III(6a): 36. 1893.

÷ Pierrea Hance in J. Bot. 15: 339. 1877.

Typus: Homalium dictyoneurum (Hance) Warb. (÷ Pierrea dictyoneura Hance ).

Stipules axillary, free. Inflorescences racemose to spicate or paniculate; bracts often large and broad, sometimes small, caducous or moderately persistent, bracteoles variable in size, caducous. Flowers pedicellate, with pedicels articulated (often elongating in fruit), to sessile (subsessile in flower, short-pedicellate in fruit); perianth (5-)6-10-merous. Sepals oblong to narrowly elliptical, narrowly oblong, oblanceolate, lanceolate to narrowly ovate, or spatulate, ascending to spreading, accrescent, sometimes becoming quite large in fruit; calyx tube funnelform to turbinate or hemispherical in fruit; sepal glands fairly large, rounded to broadly elliptical or somewhat oblong. Petals lanceolate to ovate or oblong, usually shorter than sepals in flower, fruit or both (nearly equal), accrescent and sometimes curving over the fruit; sepals and petals not ciliate (often pubescent overall). Stamens (4-)5-12 per petal, inserted both between glands and on the petals; anthers sometimes very large, dorsifixed, broadly oblong-elliptical with oblong-elliptical locules and a large (sometimes crested) connective, the slits of dehiscence nearly parallel. Upper surface of ovary conical (ovary in H. grandiflorum sometimes mostly free, distinctly lobed); styles 3-8(-9), free to or almost to the base. Locule of fruit [where seen] ellipsoid, glabrous or glabrate; sometimes 1 large ellipsoid seed per fruit, sometimes few (to several) ovules or small immature seeds.

Distribution. – Southern to southeast Asia, Malesia.

Species included. – Homalium burmanicum M.P. Nayar & G.S. Giri , H. dictyoneurum , H. gitingense Elmer , H. glabrifolium Geddes , H. grandiflorum , H. jainii A.N. Henry & Swamin. , H. minahassae Koord.

Notes. – Little herbarium material of Homalium sect. Pierrea was seen, so the sectional description relies heavily on previously published species descriptions (Sleumer, 1953, 1985; Lescot, 1970) and type images.