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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, glabrous. Stem: erect, generally branched. Leaf: cauline, opposite (sometimes also basal). Inflorescence: cyme. Flower: parts in 4s or generally 5s; calyx lobes >> tube (discounting thin membrane between lobes in Zeltnera davyi), appressed to corolla tube, generally not keeled; corolla salverform, white or generally pink, lobes <= tube, ± entire, scales 0, nectaries pits 0 (nectaries elsewhere 0); stamens often initially curved to 1 side, dehisced anthers spirally twisted; ovary sessile, style generally thread-like, deciduous, entire or cleft < 1 mm, stigmas 1, 2-lobed, or 2, stigmas or lobes wedge- to fan-shaped.Key to Zeltnera
± 25 species: temperate, dry-mesic tropics, North America, South America. (L. Zeltner, N. Zeltner, Swiss botanists, b. 1938, 1934) [Mansion 2004 Taxon 53:719–740] Variable, difficult; further study needed, especially of chromosome numbers, hybridization. Zeltnera calycosa (Buckley) G. Mans. [Centaurium calycosum (Buckley) Fernald] not in California.
Unabridged references: [Mansion & Zeltner 2004 Amer J Bot 91:2069–2086]
Plant 2–30 cm. Leaf: cauline, generally 8–25 mm, elliptic-oblong to ovate. Inflorescence: open; pedicels 2–25(55) mm. Flower: calyx lobes keeled; corolla 12–17 mm, lobes 3–7 mm, ovate-oblong to elliptic, tip rounded; style wider than thread-like, stigmas 2.
Moist coastal bluffs, dunes, open forest; < 1000 m. North Coast, Central Coast, San Francisco Bay Area, Outer South Coast Ranges, Channel Islands. [Centaurium davyi (Jeps.) Abrams; Centaurium muehlenbergii (Griseb.) Piper, misappl.] Keeled calyx lobes unique in genus. May–Aug [Online Interchange]
Previous taxon: Zeltnera arizonica
Next taxon: Zeltnera exaltata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Zeltnera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=81827, accessed on Aug 21 2014
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© 2006 Adonis (Don) Tate
|Geographic subdivisions indicated for the distribution of Zeltnera davyi|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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