Caulophyllum giganteum

(Farwell) Loconte & W. H. Blackwell

Phytologia 49: 483. 1981.

Endemic
Basionym: Caulophyllum thalictroides var. giganteum Farwell Rep. (Annual) Michigan Acad. Sci. 20: 178. 1918
Treatment appears in FNA Volume 3.

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

V3 942-distribution-map.gif

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.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Caulophyllum giganteum"
Henry Loconte +
(Farwell) Loconte & W. H. Blackwell +
Caulophyllum thalictroides var. giganteum +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Ont. +, Que. +, Ky. +, Md. +, Mass. +, Mich. +, N.H. +, N.Y. +, N.C. +, Ohio +, Pa. +, Tenn. +, Vt. +, Va. +  and W.Va. +
0-700 m +
small +  and large +
showy +  and inconspicuous +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
not developed +
Mesophytic forests +
axillary +  and terminal +
(1-)2-ternate +  and (2-)3-ternate +
opposite +  and alternate +
larger +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
pinnate +  and palmate +
not toothed +
1-carpellate +
basal +  and superior +
bladderlike +
3-merous +  and 2-merous +
distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering early spring. +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pulvinate +
yellow +, brown +  and red +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
elongating +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
palmate +  and pinnate +
persistent +
eccentric +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Caulophyllum giganteum +
Caulophyllum +
species +
deciduous +  and perennial +