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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Annual, perennial herb, shrub, often armed; caudex present or not. Stem: branched; nodes often angled, swollen. Leaf: 1-compound, opposite, petioled; stipules persistent or not; leaflets entire. Inflorescence: flowers 1–2 in axils. Flower: bisexual; sepals 5, free, persistent or not; petals 5, free, generally spreading, twisted (corolla propeller-like) or not; stamens 10, appendaged on inside base or not; ovary superior, chambers (and lobes) 5–10, each with 1–several ovules, placentas axile. Fruit: capsule or splitting into 5–10 nutlets (= mericarps).
27 genera, ± 250 species: widespread especially in warm, dry regions; some cultivated (Guaiacum, lignum vitae; Tribulus, caltrop). [Sheahan & Chase 2000 Syst Bot 25:371–384] —Scientific Editor: Thomas J. Rosatti.
Key to Zygophyllaceae
Annual, unarmed. Stem: spreading radially, prostrate to ascending, < 1 m. Leaf: even-1-pinnate; stipules narrow, green. Inflorescence: flowers 1 in axils. Flower: sepals persistent or not; petals yellow to orange, persistent, withering. Fruit: 10-lobed, splitting into 10 tubercled nutlets; style persistent; pedicel reflexed. Seed: 1 per chamber.Key to Kallstroemia
17 species: warm and tropical America. (Anders Kallstroem, obscure contemporary of Scopoli, author of genus, 1733–1812) [Porter 1969 Contr Gray Herb 198:41–153]
Stem: decumbent to ascending, < 1 m; both densely silky and sharply bristly. Leaf: stipules 4–10 mm; leaflets 8–16. Flower: peduncle >> subtending leaf; sepals persistent, >> fruit body, spreading, margins strongly inrolled; petals 15–30 mm, yellow to orange, darker at base. Fruit: 2–3 mm wide, ovoid; style 3 × fruit body.
Uncommon. Sandy roadsides; 300–900 m. Sonoran Desert (near Desert Center, Riverside Co.; Jacumba, San Diego Co.); expected but evidently not yet found elsewhere; native Arizona to Texas, western Mexico. Sep–Oct [Online Interchange]
Previous taxon: Kallstroemia californica
Next taxon: Kallstroemia parviflora
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Mar 10 2014
Citation for this treatment: [Author of taxon treatment] 2012. Kallstroemia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29859, accessed on Mar 10 2014
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© 2009 Robert Sivinski
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