. The Canadian field-naturalist. 1980 CESKA and CESKA: NEW PLANT RECORDS, 71 Previous reports of//, micrantha in British Colum- bia (Szczawinski and Harrison 1973; Taylor and MacBryde 1977) were based on an incorrectly identi- fied specimen of Isolepis setacea (cf., Scoggan 1978). This species, introduced from Europe, was collected by Malte in 1921 in the Victoria area (V, CAN) and still occurs there in the Royal Oak area {O. & A. Ceska, 1907 V). Hemicarpha micrantha closely resembles Isolepis setacea in its habit. It can be recognized by its pitted achenes as opposed to the corrugate
. The Canadian field-naturalist. 1980 CESKA and CESKA: NEW PLANT RECORDS, 71 Previous reports of//, micrantha in British Colum- bia (Szczawinski and Harrison 1973; Taylor and MacBryde 1977) were based on an incorrectly identi- fied specimen of Isolepis setacea (cf., Scoggan 1978). This species, introduced from Europe, was collected by Malte in 1921 in the Victoria area (V, CAN) and still occurs there in the Royal Oak area {O. & A. Ceska, 1907 V). Hemicarpha micrantha closely resembles Isolepis setacea in its habit. It can be recognized by its pitted achenes as opposed to the corrugated ones in the latter species. In addition to its ordinary outer scale, it also has a thin inner scale subtending the flower. Collections seen: Osoyoos, the east shore of Osoyoos Lake, a lagoon at the end of the public beach behind the Sahara Motel, A. & O. Ceska 1115, 3 August 1978 (V). *Orthocarpus imbricatus, Mountain Owl-clover This species occurs from the Klamath and Cascade ranges of northern California to central Oregon. It occurs disjunctly in the Olympic Mountains in Washington, where it was collected at Hurricane Ridge, Mount Angeles, and Marmot Pass (Jones 1936). In British Columbia we found it on the southern slopes of Little Mount Hooper, north of Cowichan Lake, Vancouver Island. Orthocarpus imbricatus forms large stands on dry scree slopes at an elevation of about 1250 m. It is accompanied by several other plants which are rather rare on Vancouver Island (, Allium crenulatum, Asterpaucicapitatus, Saus- surea americana. Spiraea pyramidata). Orthocarpus imbricatus resembles the lowland spe- cies, O. bracteosus but has eglandular bracts that are sharply differentiated from the stem leaves (Figure 2). Collections seen: Lower Mount Hooper (49°00'7"N, 124°27'5"W), O. & A. Ceska, Pojar & Roemer 1906, 26 September 1976 (V, CAN, DAO). Potamogeton oakesianus, Oakes' Pondweed Potamogeton oakesianus occurs in eastern North America from Newfoundland
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