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FOC | Family List | FOC Vol. 16 | Boraginaceae

11. Maharanga A. de Candolle, Prodr. 10: 71. 1846.

胀萼紫草属 zhang e zi cao shu

Herbs perennial or biennial, perhaps sometimes annual. Cymes terminal on main stem and sometimes on leafy branches, not clearly scorpioid, forming ± glomerate clusters wider than long, becoming ± corymbose or loosely racemose in fruit, bracteate. Calyx parted to middle or slightly below; lobes 5, narrowly triangular or cuneate. Corolla blue, purplish, yellow, or white, ovoid-ellipsoid or obovoid, contracted at both ends, abruptly expanding from a short tube into a relatively large inflated throat, with inflated ribs below lobes and deep furrows between them; throat unappendaged; lobes loosely recurved above middle; nectary ringlike, ± minutely villous. Anthers coherent at base, affixed below middle; filaments affixed at base of throat. Style included or slightly exserted. Gynobase broadly pyramidal. Nutlets slightly incurved, ± ovoid, ca. as long as wide, adaxially with a coarse prominent keel; attachment scar basal.

About nine species: Bhutan, India, Nepal, Thailand; five species in China.

1 Corolla 1.4-1.6 cm.   (2)
+ Corolla 0.9-1.1 cm.   (3)
2 (1) Stem leaves crowded, rounded at base; corolla tube with inflated, pubescent folds   1 Maharanga microstoma
+ Stem leaves widely spaced, attenuate at base; corolla tube glabrous inside except for pilose glands   2 Maharanga lycopsioides
3 (1) Corolla dirty red, urceolate   3 Maharanga emodi
+ Corolla yellow or purple, tubular.   (4)
4 (3) Stem leaves oblong or oblong-lanceolate, 2-5 × 0.6-1.3 cm; filaments 1.5-2.5 mm   4 Maharanga bicolor
+ Stem leaves broadly lanceolate, 3-7 × 1.5-2.5 cm; filaments 4-5 mm   5 Maharanga dumetorum

Lower Taxa


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