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FOC | Family List | FOC Vol. 16 | Gentianaceae

9. Gentiana Sect. Microsperma T. N. Ho, Bull. Bot. Res., Harbin. 5(4): 14. 1985.

微籽组 wei zi zu

Annuals. Capsule cylindric to narrowly ellipsoid, wingless. Seed coat alveolate, with simple shallow hexagonal pits.

Ten species: Bhutan, SW China, Nepal; nine species in China.

1 Flowers 4-merous; keeled midveins of calyx lobes decurrent as conspicuous wings on tube.   (2)
+ Flowers 5-merous; calyx lobes and tube not keeled or winged.   (3)
2 (1) Corolla 2--3.5 cm; stamens inserted near base of corolla tube   97 Gentiana lineolata
+ Corolla 3.5--6 cm; stamens inserted at middle of corolla tube.   98 Gentiana praeclara
3 (1) Plants 3-5(-10) cm tall, much branched from base, branches spreading or decumbent; leaf blade orbicular to reniform; flowers solitary at ends of branches; stamens equal.   (4)
+ Plants often taller, with 1 to several ± erect stems, if decumbent usually not branched near base; leaf blade linear, lanceolate, spatulate, narrowly elliptic, or obovate; flowers in terminal an often also axillary clusters; stamens unequal.   (6)
4 (3) Corolla yellow, with dark blue streaks and spots, (1.4-)2-2.4 cm; stamens inserted at middle of corolla tube   105 Gentiana tongolensis
+ Corolla blue or dark purple, without streaks or spots, (0.8-)1-2 cm; stamens inserted at apical part of corolla tube.   (5)
5 (4) Corolla dark purple; plicae ovate, margin denticulate; style 1.2-1.5 mm; capsule included in corolla; seed coat alveolate   103 Gentiana atropurpurea
+ Corolla light blue; plicae strongly oblique and auricular to triangular, margin entire; style 4-7 mm; capsule usually exserted   104 Gentiana vernayi
6 (3) Leaves densely crowded at apex of branches, subtending clusters of flowers (or stems very short, terminating in a cluster of flowers subtended by a several pairs of leaves); flowers mostly confined to terminal clusters; corolla dark blue or violet, without conspicuous streaks or spots   99 Gentiana delavayi
+ Leaves ± evenly spaced along stem; flowers in terminal and axillary clusters along upper half or more of stem; corolla yellow or pale blue, with dark blue streaks and spots.   (7)
7 (6) Leaf blade linear; calyx lobes linear   100 Gentiana picta
+ Leaf blade spatulate to obovate; calyx lobes narrowly elliptic or suborbicular.   (8)
8 (7) Calyx lobes narrowly elliptic, unequal; style 2-3 mm   101 Gentiana yunnanensis
+ Calyx lobes suborbicular, equal; style 3.5-5.5 mm   102 Gentiana suborbisepala

Lower Taxa


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