Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Curtis Clark

Annual to small tree; sap often colored, often milky
Leaves basal, cauline, or both, generally toothed, lobed, or dissected; cauline generally alternate; stipules 0
Inflorescence: cyme, raceme, or panicle (terminal), or flower solitary
Flower bisexual, generally radial; sepals 2–4, sometimes shed ± at flower; petals generally 4 or 6 (or more), sometimes in 2 unlike pairs; stamens 4–many; ovary generally 1, superior, chamber generally 1, stigma lobes 0–many, ovules 1–many
Fruit: generally capsule, dehiscent by valves or pores, generally septicidal
Genera in family: 40 genera, 400 sp.: n temp, n tropical, s Africa; some cultivated (Papaver, Dicentra, Eschscholzia ). Petal length includes any spur or pouch. Hunnemannia fumariifolia Sweet (Eschscholzia-like garden per with free sepals) an uncommon waif in CA. Corydalis, Dicentra, Fumaria formerly treated in Fumariaceae.


Species in genus: 1 sp
Etymology: (Greek: style poppy)


S. heterophylla (Benth.) G.C. Taylor


Annual 30–60 cm; sap yellow, clear
Leaves basal and cauline, 2–12 cm, deeply pinnately lobed, glabrous to hairy, petioled; 1° lobes toothed or lobed
Inflorescence: flowers solitary, axillary; peduncle 5–20 cm
Flower: sepals 2, 4–10 mm, shed at flower; petals 4, free, 10–20 mm, wedge-shaped, orange-red, base purple-spotted, shed after pollination; stamens many, free; placentas 4–11, style 1, slender, stigma head-like, lobes 4–11
Fruit 1–2 cm, obconic to obovate, dehiscent by flaps below tip
Seeds many, 0.4 mm, reniform, roughly net-ridged, brown or black
Ecology: Grassy areas, openings in chaparral
Elevation: < 1200 m.
Bioregional distribution: s Northwestern California, s Sierra Nevada Foothills, San Joaquin Valley, Central Western California, Southwestern California
Distribution outside California: n Baja California
Horticultural information: DRN, DRY: 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; CVS.

previous taxon | next taxon
bioregional map for STYLOMECON%20heterophylla being generated

Retrieve Jepson Interchange Index to Plant Names entry for Stylomecon heterophylla
Retrieve dichotomous key for Stylomecon
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California