Lindenbergia hookeri - Bhutan Lindenbergia

Bhutan Lindenbergia is a perennial herb with stems erect, stout, hairless, many branched. Leaves are 1.4-3 x 0.7-1.2 cm, shortly stalked or nearly stalkless, elliptic, sawtoothed or minutely toothed, base wedge-shaped, tip pointed or tapering, hairless on both surfaces. Racemes are 6-9 cm long, at branch-ends, mostly covered with minute, somewhat club-shaped hairs. Flowers are oppositely onesided, stalked. Bracts are 4-6 x 2.5-3.5 mm, stalkless, ovate, pointed, nearly entire, sparsely velvet-hairy. Sepal-cup is slightly zygomorphic, crateriform, 7-9 mm long, 5-8 mm in diameter, sparsely velvet-hairy on both sides, sepals triangular, tapering, 2-2.3 mm long, 1.3-2.4 mm wide. Flower tube is 7-14 mm long, 3.5-4.5 mm in diameter, broadened upwards, outside hairless, upper lip about 4 mm long, triangular, more or less hairless, base about 7 mm wide, abruptly tapering towards the tip, tip about 1 mm wide, notched; lower lip about 6 mm long, spreading, broadly obovate, deeply galeate at the middle, densely velvet-hairy inside the galea, tip broadly 3-lobed, lobes nearly round, about 2 mm in diameter, hairless. Style is 1.4-1.6 cm long, hairy at base. Capsules are ovoid, 6-8 mm long, 3.5-4.5 mm in diameter, included, sparsely hairy, becoming hairless. Bhutan Lindenbergia is found in Eastern Himalayas, at altitudes of 600-1200 m.