Jepson Flora Project: Jepson Interchange    

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Duncan M. Porter

Herb, shrub, often armed; caudex present or not
Stem branched; nodes often angled, swollen
Leaves 1-compound, opposite; stipules persistent or deciduous; leaflets entire
Inflorescence: flowers 1–2 in axils
Flower bisexual; sepals 5, free, persistent or deciduous; petals 5, free, generally spreading, sometimes twisted and appearing propeller-like; stamens 10, sometimes appendaged on inside base; ovary superior, chambers 5–10, ovules 1–several per chamber, placentas axile
Fruit: capsule or splitting into 5–10 nutlets
Genera in family: 26 genera, ± 250 species: widespread especially in warm, dry regions; some cultivated (Guaiacum, lignum vitae; Peganum, harmal (NOXIOUS and illegal); Tribulus, caltrop (pernicious)). Peganum harmala L. has been reported as a pernicious weed near Daggett, San Bernardino Co
Reference: [Porter 1972 J Arnold Arbor 53:531–552]


Annual, unarmed
Stem spreading radially, prostrate to ascending, < 1 m
Leaf even-1-pinnate; stipules narrow, green
Inflorescence: flowers solitary in axils
Flower: sepals deciduous or persistent; petals yellow to orange, withering but not deciduous
Fruit 10-lobed, splitting into 10 tubercled nutlets; style persistent; peduncle reflexed
Seed 1 per chamber
Species in genus: 17 species: warm and tropical Am
Etymology: (A. Kallstroem, obscure contemporary of Scopoli, author of genus)
Reference: [Porter 1969 Contr Gray Herb 198:41–153]


K. grandiflora A. Gray

Stem decumbent to ascending, < 1 m; some hairs densely silky, others sharply bristly
Leaf: stipules 4–10 mm; leaflets 8–16
Flower: peduncle > subtending leaf; sepals persistent, margins strongly inrolled, >> fruit body, spreading; petals 15–30 mm, yellow to orange, darker at base
Fruit 2–3 mm wide, ovoid; style 3 X fruit body
Ecology: Uncommon. Sandy roadsides
Elevation: 300–900 m.
Bioregional distribution: Sonoran Desert (near Desert Center, Riverside Co.; Jacumba, San Diego Co.; expected elsewhere)
Distribution outside California: native Arizona to Texas, w Mexico
Flowering time: Sep–Oct
Waif in CA.

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bioregional map for KALLSTROEMIA%20grandiflora being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Kallstroemia grandiflora
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