Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



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. hookeri Walp.


Plant 7–12 cm
Inflorescence 3–6 cm, < 3 cm diam, purplish to pale yellow; lower bracts 10–12 mm, ovate to narrowly obovate, tip obtuse to acute
Flower: calyx cup 2–3 mm, teeth 2–4 mm, deltate; corolla 10–15 mm, generally pale, lips erect, 3–4 mm (upper > lower)
Seed ± 1.5 mm
Ecology: Open woods, shrubby places, generally on Gaultheria shallon
Elevation: < 300 m.
Bioregional distribution: Outer North Coast Ranges (1 site, Humboldt Co.), San Francisco Bay Area (Mount Tamalpais, Marin Co.)
Distribution outside California: to British Columbia
CA plants are among the most distinct from B. strobilacea in their small size and pale color.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for BOSCHNIAKIA%20hookeri 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 hookeri
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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