Caulophyllum giganteum
Phytologia 49: 483. 1981.
Endemic
Basionym: Caulophyllum thalictroides var. giganteum Farwell
Treatment appears in FNA Volume 3.
Revision as of 17:21, 18 September 2019 by FNA>Volume Importer
Stems 2-7 dm. Leaves: 1st leaf (2-)3-ternate; 2d leaf (1-)2-ternate; leaflets 5-10 × 3-8 cm. Inflorescences with 4-18 flowers. Flowers: bracteoles 2-4 mm; sepals purple, red, brown, yellow, 6-9 × 1-4 mm, laterally revolute; petals 2-3 mm; stamen filaments 1.5-2.5 mm; pistil 3-5 mm; style 1-2 mm. 2n = 16.
Phenology: Flowering early spring.
Habitat: Mesophytic forests
Elevation: 0-700 m
Distribution
Ont., Que., Ky., Md., Mass., Mich., N.H., N.Y., N.C., Ohio, Pa., Tenn., Vt., Va., W.Va.
Discussion
Caulophyllum giganteum has a relatively northern distribution, and it flowers precociously; C. thalictroides has a broader distribution, extending farther south, flowers and fruits later, and is less precocious. Caulophyllum giganteum is treated as part of C. thalictroides by most authors.
Selected References
None.
Lower Taxa
None.