Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Silphium compositum

kidney-leaf rosinweed
Habit Plants scapiform, 50–250 cm; taprooted.
Stems

terete, glabrous (sometimes glaucous).
Leaves

basal persistent, petiolate;

cauline alternate, petiolate or sessile;

blades cordate, deltate, elliptic, hastate, ovate, reniform, or sagittate, 2–35 × 0.5–52 cm, sometimes (proximal) pinnately or palmately lobed, bases oblique, truncate, attenuate, cordate, sagittate, or hastate, ultimate margins toothed, apices acute, faces glabrous, hispid, or scabrous.
Ray florets

6–12;

corollas yellow.
Disc florets

20–85;

corollas yellow.
Phyllaries

11–18 in 2–3 series, outer appressed to reflexed, apices obtuse to cuspidate, abaxial faces sparsely scabrous.
Cypselae

6–12 × 4–10 mm;

pappi 1–4 mm.
2n

= 14.

Silphium compositum
Phenology Flowering summer–early fall.
Habitat Open, pine and oak forests, sandy soils, fields, roadsides, meadows
Elevation 0–1600 m (0–5200 ft)
Distribution
from FNA
AL; FL; GA; NC; SC; TN; VA; WV
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 79.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Silphium
Sibling taxa
S. albiflorum, S. asteriscus, S. brachiatum, S. glutinosum, S. integrifolium, S. laciniatum, S. mohrii, S. perfoliatum, S. radula, S. terebinthinaceum, S. wasiotense
Synonyms S. compositum subsp. ovatifolium, S. compositum subsp. reniforme, S. compositum var. reniforme, S. compositum subsp. venosum, S. compositum var. venosum, S. lapsuum, S. orae, S. ovatifolium, S. reniforme, S. venosum
Name authority Michaux: Fl. Bor.-Amer. 2: 145. (1803)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers