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FOC | Family List | FOC Vol. 16 | Gentianaceae

10. Gentiana Sect. Dolichocarpa T. N. Ho, Bull. Bot. Res., Harbin. 5(4): 16. 1985.

柱果组 zhu guo zu

Annuals. Flowers terminal, solitary, small. Plicae symmetrical. Capsules cylindric to narrowly oblong, apex obtuse, wing-less. Seeds wingless at maturity, rarely winged when young; seed coat minutely reticulate.

Fourteen species: America, Asia, Europe; 12 species in China.

Some authors question the separation of this section from sect. Chondrophyllae.

1 Pedicel exserted from upper leaves.   (2)
+ Pedicel enveloped by upper leaves (rarely exserted in G. prostrata) or leaves sessile.   (5)
2 (1) Corolla 1.1-1.5 cm; plicae ovate, apex obtuse.   (3)
+ Corolla 1.8-2.6 cm; plicae oblong to broadly oblong, apex truncate.   (4)
3 (2) Calyx lobes lanceolate; corolla outside with blue-gray stripes; valves of capsules not membranous and transparent   127 Gentiana caeruleogrisea
+ Calyx lobes triangular; corolla outside blue without dark stripes; valves of capsules membranous and transparent   126 Gentiana clarkei
4 (2) Leaf apex mucronate with a recurved tip; plicae margin serrulate   124 Gentiana pudica
+ Leaf apex not mucronate; plicae margin laciniate   125 Gentiana producta
5 (1) Stem leaves rigid, shiny, margin broadly membranous except at apex.   (6)
+ Stem leaves herbaceous, not shiny, margin narrowly membranous, cartilaginous, or not modified.   (7)
6 (5) Stem branches abbreviated and crowded in a dense tuft; corolla (1-)1.5-2 cm, without bluish gray lines in throat   128 Gentiana micans
+ Stem branches not abbreviated nor crowded in a tuft; corolla (2-)2.5-3 cm, with bluish gray lines in throat   129 Gentiana haynaldii
7 (5) Corolla throat blackish; stamens inserted on apical part of corolla tube   118 Gentiana gyirongensis
+ Corolla throat mostly similar in color to rest of corolla, sometimes with black streaks; stamens inserted at middle or basal part of corolla tube.   (8)
8 (7) Corolla salverform.   (9)
+ Corolla tubular to funnelform.   (10)
9 (8) Stems not papillate; leaf blade margin membranous, apex acute to obtuse; plicae ovate, margin serrulate   120 Gentiana stellata
+ Stems papillate; leaf blade margin cartilaginous, apex rounded; plicae oblong, margin erose   122 Gentiana crenulatotruncata
10 (8) Stems not papillate; leaves overlapping in 4 distinct ranks; stamens inserted near base of corolla tube; filaments 1.5-2.5 mm   119 Gentiana tetrasticha
+ Stems usually papillate (not papillate in G. prostrata var. karelinii); leaves usually lax, not in well-defined ranks; stamens inserted at middle of corolla tube; filaments (2-)3-6.5 mm.   (11)
11 (10) Seeds with several irregular spongy edges; stem leaf blades suborbicular   121 Gentiana nanobella
+ Seeds without spongy edges; stem leaf blades spatulate to obovate   123 Gentiana prostrata

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