Jakutsk Snowparsley

Conioselinum cnidiifolium (Turcz.) A. Porsild, Rhodora 41 : 267. 1939.
Selinum cnidiifolium Turcz. Bull. Soc. Nat. Mosc. 13: 72. 1840.
Selinum Dawsoni Coult. & Rose, Bot. Gaz. 13: 144. 1888.
Conioselinum Dawsoni Coult. & Rose, Contr. U. S. Nat. Herb. 7: 152. 1900.
Stout, sparingly branched, 5-9 dm. high; leaves ovate to deltoid in general outline, excluding the petioles 10-20 cm. long, 8-15 cm. broad, ternate-pinnately dissected, the leaflets ovate, 10-20 mm. long, 5-10 mm. broad, pinnatifid, the lobes acute; peduncles 8-20 cm. long; involucre of 1-several narrow, scarious bracts, or wanting; involucel of several linear-oblong, scarious, aristate bractlets, about equaling the flowers; rays 12-30, subequal, 20-55 mm. long; pedicels 3-5 mm. long; fruit oblong-oval, 4-5 mm. long, 2-3 mm. broad, the dorsal ribs winged almost as strongly as the lateral; seed only moderately flattened dorsally in cross section, the face plane.
Type locality: "Inter Jaktitzk et fl. Aldan," Siberia, collector unknown.
Distribution: Northwestern Mackenzie district and Yukon Territory, west to Alaska and Siberia {Dawson 23, Mexia 2155).

Cnidium cnidiifolium is a species of flowering plant in the parsley family, Apiaceae. Its common names include northern hemlock-parsley and Jakutsk snowparsley, after the Russian town Jakutsk. It is native to Russia, Alaska, and the Northwest Territories, Yukon, and British Columbia in Canada.

Light purple to white umbels bloom from late June to August, each with five lanceolate bracts. The fruits are ovate. The lower leaves are glabrous, bi- to tripinnate, and borne on petioles, while the upper leaves are nearly sessile to sessile. The stems are split at the caudex and are up to 60 centimeters tall.

This species grows in wet areas such as meadows and riverbanks, and on gravelly slopes.