|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
Annual to tree
Leaves generally cauline, generally simple, generally alternate, petioled or not; stipules 0
Inflorescence: panicle, raceme, spike, or flowers solitary in axils, generally open; bracts leaf-like or not
Flower: bisexual, radial or bilateral, sometimes inverted (pedicel twisted 180°; hypanthium generally present, ± fused to ovary; sepals generally 5; corolla radial to 2-lipped, generally fused (tube sometimes split down back), lobes generally 5; stamens 5, free or ± fused (anthers and filaments fused into tube or filaments fused above middle); ovary inferior, sometimes half inferior, chambers 13, placentas axile or parietal, ovules many, style generally 1, 25-branched
Fruit: generally capsule, dehiscing on sides or at tip by pores or short valves
Genera in family: ± 70 genera, ± 2000 species: worldwide. Some cultivated for ornamental (Campanula, Jasione, Lobelia ). Subfamilies sometimes treated as different families.
Stem decumbent to erect, (10)2040 cm
Leaves cauline, often deciduous before flower, << flower bracts, 0.52(4) mm wide, lanceolate to awl-like (uppermost sometimes wider), sessile, generally entire
Inflorescence: spike; terminal flowers often aborted, overtopped by fertile
Flower sessile, generally inverted at full bloom by twisted ovary; corolla generally >> calyx, blue to pink or white, generally with a symmetric white or yellow spot on lower lip, tube entire, limb strongly 2-lipped, generally 2 lobes of upper lip < 3 of lower; stamens fused (filaments, anthers in tubes), generally 2 smaller anthers each with terminal tuft of bristles, 1 triangular or horn-like, generally 0.20.5 mm, others linear, shorter; ovary pedicel-like, chambers 12, placentas parietal or axile
Fruit dehiscent by 35 lateral slits
Species in genus: 13 species: w North America, Chile
Etymology: (A.J. Downing, American horticulturist, 18151852)
Reference: [Weiler 1962 PhD Univ of CA Berkeley]
Fl part positions (upper = next to stem; lower = away from stem) given at full bloom.
Flower: corolla 1012 mm, glabrous, lateral sinuses ± = upper, lower lip blue with a central white field including 2 yellow spots, 2 raised nipples, generally alternate 3 small purple spots at throat, lower lobes obovate, obtuse, abruptly toothed; anthers included in corolla tube, < 45° to filaments; ovary 2-chambered, placentas axile
Fruit 1860 mm; lateral walls tough, tardily dehiscent with no evident translucent lines
Seed longitudinally striate
Ecology: Uncommon. Vernal pools
Elevation: < 200 m (GV), 14001600 m (SCo, WTR).
Bioregional distribution: Great Central Valley (Colusa to Tulare cos.), South Coast (Santa Rosa Plateau, Riverside Co.), Western Transverse Ranges (extreme n Ventura, s Kern cos.). Some plants in n Sutter Co. have a minute corolla horn similar to that of D. ornatissima ; plants in SCo, WTR (fruit < 30 mm, nectar guides ± unusual), possibly distinct
Horticultural information: TRY.