Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Nancy Morin, except as specified

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 1–3, placentas axile or parietal, ovules many, style generally 1, 2–5-branched
Fruit: generally capsule, dehiscing on sides or at tip by pores or short valves
Seeds many
Genera in family: ± 70 genera, ± 2000 species: worldwide. Some cultivated for ornamental (Campanula, Jasione, Lobelia ). Subfamilies sometimes treated as different families.


Species in genus: 1 sp
Etymology: (Greek: different bell, from cleistogamous and opening flowers)


H. rariflorum Nutt.

Annual; roots fibrous
Stem erect, 5–30 cm, simple or branched from base, 4-angled, very thin, sparsely hairy
Leaves cauline, 2–10 mm, round-cordate, thin, serrate, sessile
Inflorescence: flowers solitary in axils of leaf-like bracts, sessile
Flowers: lower cleistogamous; sepals 2–4 mm, widely triangular, leaf-like, toothed; corolla 3–5 mm, cylindric, tube white to pale blue, lobes ± 1.5 mm, triangular, erect, deep blue; stamens ± 1.5 mm, filaments linear; ovary inferior, 2–3 mm, short-oblong, papery, generally with many long, stiff hairs, style 3 mm, upper 25% papillate
Fruit dehiscing by lateral pores near base
Seed 0.5 mm, elliptic
Ecology: Vernally wet places
Elevation: < 2300 m.
Bioregional distribution: California Floristic Province
Distribution outside California: to British Columbia, Montana, Nevada

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bioregional map for HETEROCODON%20rariflorum 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 Heterocodon rariflorum
Retrieve dichotomous key for Heterocodon
Overlay Consortium of California Herbaria specimen data by county on this map
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