L., Sp. Pl. 243 (1753).
Synonymy: Not Applicable
Common name: Hemlock.
Erect glabrous biennial, 1-2.5 m high, with a pale-green or glaucous purple-spotted striate hollow stem; leaves 2-4-pinnate, triangular, to 50 cm long, c. 40 cm broad, glabrous; lobes oblong-lanceolate, pinnatifid, coarsely serrate or crenate-serrate; petioles with purple blotches, longitudinal furrows and a broadly sheathing base.
Umbels with 10-20 sometimes puberulent rays; involucral bracts 5 or 6, narrowtriangular to ovate-lanceolate, reflexed; involucel of 3-6 bracteoles on the outside of the many-flowered umbellules, broadened at the base and often connate; flowers 2-3 mm diam.; petals white; stamens spreading, longer than the petals; filaments and anthers white; stylopodium white, thick, flat, its 2 parts confluent.
Fruit subglobose; mericarps 2.5-3.5 mm long, with 5 wavy-crenate ribs.
Ross-Craig (1958) Drawings Brit. Pl. 12:t. 6; Burbidge & Gray (1970) Flora of the A.C.T., fig. 283; Beadle (1980) Students flora of northeastern New South Wales, fig. 266C.
In waste places, mainly near stockyards, along river banks, creeks and roadsides.
S.Aust.: FR, EA, EP, NL, MU, SL, KI, SE. W.Aust.; N.S.W.; Vic.; Tas. New Zealand. Native in temperate Eurasia, naturalised in temperate America.
Flowering time: Oct. — Nov.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
The vegetative parts and fruits contain several closely related pyridine alkaloids and are very poisonous.
Not yet available