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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual to perennial herb [to trees]. Stem: decumbent to erect, < 2 m, simple or branched. Leaf: simple, cauline, sometimes also basal, opposite or whorled, entire, sessile or basal ± petioled; stipules 0. Flower: bisexual, radial, parts in 4s or 5s except pistil 1; sepals fused, persistent; petals fused, ± persistent, sinus between lobes often unappendaged; stamens epipetalous, alternate corolla lobes; ovary superior, chamber 1, placentas parietal, often intruding, stigmas 1–2. Fruit: capsule, 2-valved. Seed: many.
± 90 genera, 1800 species: worldwide; some cultivated (Eustoma, Exacum, Gentiana). [Struwe & Albert 2002 Gentianaceae. Cambridge Univ Press] Gentianella tenella moved to Comastoma. Key to genera revised by Bruce G. Baldwin. —Scientific Editor: Thomas J. Rosatti.
Unabridged references: [Wood & Weaver 1982 J Arnold Arbor 63:441–487; Struwe & Albert 2002 Gentianaceae: Systematics and Natural History. Cambridge Univ Press]
Key to Gentianaceae
Annual, perennial herb, glabrous. Leaf: basal, cauline, opposite. Inflorescence: flower 1 per stem or branch. Flower: parts in 4s; calyx tube distinct, lobes lanceolate, acuminate; corolla funnel-shaped, blue (white), lobes <= tube, oblong to elliptic-obovate, obtuse or rounded, ± entire to serrate, jagged, or fringed, without fringes or scales on adaxial surface, nectary pits 0 (nectaries on corolla tube near base); ovary stalked, style short or indistinct, persistent, entire, stigmas 2.Key to Gentianopsis
± 15 species: temperate North America, Eurasia. (Greek: resembling Gentiana) Gentianopsis thermalis (Kuntze) H.H. Iltis occurs near California, in Nevada.
Unabridged note: Efforts should be made to find in California Gentianopsis thermalis (Kuntze) H.H. Iltis [Gentianopsis detonsa (Rottb.) Ma var. elegans (A. Nelson) N.H. Holmgren] (stems 1–several, generally branched; basal leaves generally present at flower; corolla (20)35–75 mm, lobes proximally fringed, distally dentate), which occurs very near the state line in Nevada (Washoe County; Lake Tahoe, creek at Incline, alt. 6200 ft., sandy beach along stream).
Annual 3–45 cm. Stem: ± decumbent to erect. Leaf: basal, lower cauline < 70 mm, < 15 mm wide, spoon-shaped, rounded to acute, upper cauline few, < 60 mm, < 10 mm wide, lance-elliptic to linear, acute. Inflorescence: peduncle (0.4)2.5–21 cm, generally > 2.5 × subtending internode, generally > whole stem. Flower: calyx (10)14–36 mm; corolla 20–55 mm. Seed: papillate, obtuse.
2n=78. Wet meadows; 1800–4000 m. c&s High Sierra Nevada, White and Inyo Mountains; western Nevada. Jul–Sep [Online Interchange]
Previous taxon: Gentianopsis
Next taxon: Gentianopsis simplex
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 11 2014
Citation for this treatment: [Author of taxon treatment] 2012. Gentianopsis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=26675, accessed on Mar 11 2014
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