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Coastal Brookfoam

Boykinia occidentalis Torr. & Gray

Comprehensive Description

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Therophon occidentale (T. & G.) Rydb
Boykinia occidenlalis T. & G. Fl. N. Am. 1 : 577. 1840. Boykinia elata Greene, Fl. Fran. 190, in part. 1891. Therofon elatum Greene, Man. Bay Reg. 121, in part. 1894.
Slender ; stem 2-6 dm. high, glabrous or nearly so below, puberulent and slightly glandular above ; petioles of the basal leaves 5-15 cm. long, glabrous or nearly so ; blades reniform, thin, 5-7-cleft and double-toothed with broadly ovate teeth, basal sinus deep and narrow ; lower stem-leaves similar but with more open basal sinus ; upper stem-leaves usually with truncate bases and more ovate ; inflorescence puberulent and more or less glandular ; bractlets lanceolate, thin and usually deciduous ; hypanthium campanulate, 2-3 mm. long, somewhat glandular below, in fruit ovoid, 4-5 mm. long ; sepals lanceolate,
glabrous or nearly so, in fruit exceeded by the styles ; petals white, spatulate, 4-6 mm. long.
Type locality : Oregon.
Distribution: Along streams from California to British Columbia.
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bibliographic citation
John Kunkel SmaII, Per Axel Rydber, Nathaniel Lord Britton, Percy Wilson, Henry Hurd Rusby. 1905. ROSALES, PODOSTEMONACEAE, CRASSULACEAE, PENTHORACEAE and PARNASSIACEAE. North American flora. vol 22(2). New York Botanical Garden, New York, NY
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Boykinia occidentalis

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Boykinia occidentalis is a species of flowering plant in the saxifrage family known by the common name coastal brookfoam. It is native to the west coast of North America from British Columbia to California, where it grows in shady areas near riverbanks and streams. It is a rhizomatous perennial herb producing large, rounded leaves with blades up to 45 centimeters long and 12 wide, borne on petioles up to 30 centimeters in length. Each leaf has several rounded lobes with dull teeth along the edges. The inflorescence reaches 30 to 60 centimeters tall on a thin stem. It bears an open array of many small white flowers, each with five tiny pointed sepals and five larger oval petals.

Boykinia occidentalis 6572.JPG

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