e-Flora of Thailand

Volume 15 > Part 1 > Year 2021 > Page 22 > Rubiaceae > Schradera

Schradera polysperma (Jack) Puff, R.Buchner & Greimlerwfo-0000307128

Blumea 43: 293. 1998.— Morinda polysperma Jack, Malayan Misc. 1(2): 14. 1820; Roxb., Fl. Ind. 2: 204. 1824; K.M.Wong in K.M.Wong et al., Fl. Singapore 13: 281. 2019.— Lucinaea polysperma (Jack) K.Schum. in Engl. & Prantl, Nat. Pflanzenfam. 4(4): 64. 1891; Craib, Fl. Siam. 2: 78. 1932. Fig. 3.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Lucinaea morinda [‘morindae’] DC., Prodr. 4: 368. 1830; Korth., Ned. Kruidk. Arch. 2(2): 167. 1851; Miq., Fl. Ind. Bat. 2: 198. 1857; Hook.f., Fl. Brit. India 3: 93. 1880; King, & Gamble, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 72(2): 179. 1904; Ridl., Fl. Malay Penins. 2: 56. 1923.
Lucinaea paniculata King, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 72(2): 177. 1904; Ridl., Fl. Malay Penins. 2: 56. 1923.


Description : Epiphytic shrubs; old stems several metre long, clinging to host plant with adventitious roots arranged in rows on internodes; upper shoots hanging away from host plant, usually without adventitious roots, often much-branched, sometimes forming rounded crown (to ca 1 m or more in diam.); branches generally glabrous, occasionally youngest parts puberulous; bark brown. Stipules connate up to ½ of length, free part triangular, 4 by 2–3 mm, mostly glabrous. Leaves lanceolate to elliptic-oblong to obovate, (5–)6–8 by 2.5–4 cm, base attenuate or rounded, apex attenuate or acute, thickly coriaceous, glabrous, midrib sunken above, raised beneath; petiole 0.6–1.2(–2) cm long, mostly glabrous. Inflorescences terminal, typically 3–5 together in umbel-like arrangement (rarely and very a typically only solitary), sometimes also additional axillary inflorescences below terminal ones; individual heads globose, 1–2 cm in diam., (5–)10–15-flowered; involucre small, inconspicuous; peduncles (1–)2–3 cm long, straight, mostly glabrous. Flowers sweetly scented, heterodistylous (occasionally also ± homostylous), 3–5-merous. Calyx truncate, 2–4(–5) mm high, mostly glabrous (sometimes rim of calyx ciliate). Corolla white, whitish green, to pale purplish green; tube 3–5 mm long (in both short- and long-styled morphs); lobes 5–8 mm long, hooded apex of lobes 1.5–3 mm long; inside of corolla with stiff, straight hairs at throat, also along middle of lobes (short-styled morph only), with ring of soft downwardly curled hairs at or below insertion point of filaments. Filaments 2 mm long, basally beset with curly hairs (long-styled morph) or 5–6 mm long, basally glabrous (short-styled morph); anthers 1.5–2 mm long, (partially) exserted in short-styled morph only. Ovary globose, 2–3 mm in diam.; style to ca 6 mm long, entirely glabrous (short-styled morph) or longer, 7–8 mm, glabrous below and with very few, upwards curved, short and stiff unicellular hairs above (long-styled morph); stigma lobes 2 mm long, ± flattened, with inconspicuous papillae, (partially) exserted in long-styled morph only. Fruiting heads ca 2–3 cm in diam. in natural state (shrunk and considerably smaller in dried material), consisting of tightly packed but unfused fruitlets. Individuals fruit green-white to white when fully mature, (sub)globose, (3–)4–5 mm in diam.


Thailand : PENINSULAR: Surat Thani, Nakhon Si Thammarat, Narathiwat.


Distribution : Peninsular Malaysia (type of Lucinaea paniculata), Singapore (type), Sumatra, Borneo.


Ecology : In or at the edge of peat swamp forests or swamp, sometimes in coastal scrub or amongst patches of trees on sandy ground, sea level to ca 50 m alt.


Vernacular : Yo yan (ยอย่าน)(Peninsular); sapha chuk chong (สภาจุกช่อง)(Chumphon); ka-mu-du-a-ka (กะมูดูอากา)(Malay-Narathiwat).


Notes: 1. Rare in Thailand and only known from few localities.

2. In fruiting stage resembling Morinda but distinguished from the latter in not having true ‘syncarps’ (i.e. heads consisting of fused fruitlets) and in having many-seeded, berry-like individual fruitlets


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