Munronia humilis

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Munronia humilis

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Description

Suffrutex with apparently short-lived semi-herbaceous shoots to 30 cm, but usually much less, and a woody stock to 8 mm diam. Leaves simple, 3.5–8 by 1–4 cm, ovate or obovate, finely simply hairy especially on abaxial venation; apex acute or obtuse; base cuneate to decurrent; margin dentate or sinuately lobed, predominantly in more distal half; veins about 4 or 5 on each side, ascending, culminating in tips of major lobes; petiole 5–20 mm, pubescent. Flowers solitary or, more usually, in few-flowered thyrses up to 18 mm long, axillary to somewhat supra-axillary, squarrose, pubescent; bracts c. 4 mm long, subulate, pubescent; bracteoles c. 1 mm long, long-triangular, pubescent. Petals 2.75–4 cm long, 3–4 mm wide, linear-spatulate, white, cohering at base, apex acute. Staminal tube narrowly conical, white, with the filaments reflexed and curved outward at tips to form a subapical ruff; anthers at resultant apex, orange. Ovary subglabrous; stylehead 5-lobed, orange-yellow. Fruit c. 1 cm, depressed globose, lobed, subglabrous.

Distribution

Asia-Tropical: Jawa (Jawa present); Thailand (Thailand present), Luzon present, Palawan present
Thailand and MalesiaJava, Philippines (Palawan, Luzon).

Notes

The habit of Munronia humilis superficially resembles that of Hippobroma (Laurentia, Isotoma) longiflora (L.) G. Don (Campanulaceae). This species constitutes sect. Pseudoturraea Harms, characterized by the reflexed staminal tube appendages and the petals free from the tube. The third section, Philastrea (Pierre) Harms, is also monotypic but restricted to Indochina. The status of these sections cannot be evaluated in the absence of a modern revision of the genus.

Citation

Harms 1940 – In: Engl. & Prantl, Nat. Pflanzenfam., ed. 2, 19bl: 93.
Fern.-Vill 1880: Fl. Filip. Nov. App.: 41
Merr. 1912: Fl. Manila: 274
Harms 1917 – In: Ber. Deutsch. Bot. Ges.: 80.
?Koord. 1912 – In: Exk. Fl. Java: 438.
Vidal 1886: Rev. Pl. Vasc. Filip.: 81
Blanco 1845 – In: Fl. Filip.: 367
Pellegr. 1946: Fl. Indo-Chine.: 688.
Merr. 1923 – In: Enum. Philipp. Flow. Pl.: 359
?Backer 1911: Schoolfl. Java: 200
Miq. 1859 – In: Fl. Ind. Bat.: 534
Blanco 1878: p. 315. – In: Fl. Filip.: t. 181.
Harms 1940 – In: Engl. & Prantl, Nat. Pflanzenfam., ed. 2, 19bl: t. 22
C.DC 1878 – In: DC., Monogr. Phan. 1: 440
Miq. 1868 – In: Ann. Mus. Bot. Lugd.-Bat.: 4
Backer 1911: Schoolfl. Java: 200
Merr. 1923 – In: Enum. Philipp. Flow. Pl.: 359
Merr. 1914 – In: Philipp. J. Sc, Bot.: 308
Adelb. 1948 – In: Blumea: 315
Koord. 1912 – In: Exk. Fl. Java: 438.
Merr. 1918: Sp. Blanc.: 208
Craib 1926 – In: Enum. Fl. Siam.: 248
Backer & Bakh.f. 1965 – In: Fl. Java: 119.