Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Lawrence R. Heckard

Annual, perennial herb, non-green root-parasites; roots modified into absorptive structures; plant an erect, fleshy, mostly underground stem (peduncle) with terminal inflorescence
Leaf: true leaves 0
Inflorescence: spike, raceme, or panicle; bracts alternate, scale-like
Flower bisexual; calyx cylindric or cup-shaped, lobes 0–5, persistent; corolla ± 2-lipped, lobes generally 5; stamens 4, epipetalous in 2 pairs (sometimes a 5th vestigial); ovary superior, chamber 1, placentas generally 2–4, parietal, simple or lobed, stigma generally 2–4-lobed, generally bowl- to funnel-shaped
Fruit: capsule, loculicidal; valves 2–4
Seeds many, small, angled; surface netted
Genera in family: 14 genera, 200 species: especially n temp
Reference: [Thieret 1971 J Arnold Arbor 52:404–432]
Recent taxonomic note: Recently treated to include hemiparasitic genera of Scrophulariaceae (e.g., Castilleja, Cordylanthus, Orthocarpus, Pedicularis, Triphysaria [Olmstead et al. 2001 Mol Phylogen Evol 16:96–112]



Perennial, glabrous
Stems generally simple, annual, 1–many from corm-like thickening surrounding host root
Inflorescence spike-like; bracts densely overlapping, ± ovate; pedicels generally < 2 mm; bractlets on pedicel 0–3, narrow
Flower: calyx cup-shaped, teeth 0–5 (variable on a plant), tip acute or tapered; corolla with ring of hairs in upper tube at base of stamens, upper lip entire or indented, lower lip 3-lobed; upper filament and anther hairy
Fruit 2–4-valved; placenta 1 per valve
Species in genus: 3 species: nw North America, ne Asia
Etymology: (Boschniaki, Russian botanist)
Reference: [Gilkey 1945 OR State Monogr Bot 9]


B. strobilacea A. Gray


Plant 10–30 cm
Inflorescence generally 7–18 cm, 3–6 cm diam, generally reddish brown to dark purplish; lower bracts 15–20 mm, ovate to widely obovate, margin generally pale, tip obtuse to rounded
Flower: calyx cup 2–4 mm, teeth 3–7 mm, narrowly deltate; corolla 15–20 mm, generally purplish (lobe margins pale), lips 5–6 mm, ± equal, lower lip generally spreading
Seed ± 2 mm
Ecology: Open woods, chaparral, on Arctostaphylos or Arbutus
Elevation: < 3000 m.
Bioregional distribution: California Floristic Province (except s Southwestern California)
Distribution outside California: s Oregon; widely scattered, most common Northwestern California, Transverse Ranges

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bioregional map for BOSCHNIAKIA%20strobilacea 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 Boschniakia strobilacea
Retrieve dichotomous key for Boschniakia
Retrieve multiple-entry key (MEKA) for Boschniakia
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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