Flora of North America species comparison

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Chylismia cardiophylla

heart leaf primrose, heartleaf suncup
Habit Herbs annual or perennial, villous and glandular puberulent.
Stems

usually well branched, forming bushy habit, 20–100 cm.
Leaves

cauline, mostly toward base;

petiole (0.7–)2.5–7.5 cm;

blade cordate-ovate to -orbiculate, 2.5–7.5 × 2.3–5.5 cm, smaller distally, margins erose-dentate.
Racemes

nodding, congested.
Flowers

floral tube 4.5–14 mm, villous inside;

sepals 3–9 mm;

petals yellow, 3–12 mm;

filaments 1–3 mm, anthers 2–4 mm;

style 8–23 mm, stigma surrounded by or exserted just beyond anthers at anthesis.
Capsules

ascending, cylindrical, 20–55 mm;

pedicel 1–18 mm.
Seeds

0.5–0.7 mm.

Chylismia cardiophylla
Distribution
sw United States; nw Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 3 (2 in the flora).

P. H. Raven (1962, 1969) determined this species to be self-compatible, but primarily outcrossing. Subspecies cedrosensis (Greene) W. L. Wagner & Hoch, occurs in Baja California and adjacent Sonora, Mexico.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Herbs villous, sometimes also glandular puberulent; floral tubes 4.5–12 mm.
subsp. cardiophylla
1. Herbs glandular puberulent throughout, often also sparsely villous; floral tubes 9–14 mm.
subsp. robusta
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Lignothera
Sibling taxa
C. arenaria, C. atwoodii, C. brevipes, C. claviformis, C. confertiflora, C. eastwoodiae, C. exilis, C. heterochroma, C. megalantha, C. multijuga, C. munzii, C. parryi, C. scapoidea, C. specicola, C. walkeri
Subordinate taxa
C. cardiophylla subsp. cardiophylla, C. cardiophylla subsp. robusta
Synonyms Oenothera cardiophylla, Camissonia cardiophylla
Name authority (Torrey) Small: Bull. Torrey Bot. Club 23: 193. (1896) — (as Chylisma)
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).



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