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
For up-to-date information about California vascular plants, visit 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.



Shrub to small tree, evergreen; sap colorless
Leaves entire or minutely toothed
Inflorescence: flowers solitary, terminal
Flower: receptacle funnel-shaped around ovary base; sepals 2, shed at flower; petals 4, free, obovate or wedge-shaped, yellow, satiny, shed after pollination; stamens many, free; placentas 2, style 0, stigma lobes 2, flat
Fruit cylindric, dehiscent from base
Seeds many, 2–3 mm, obovate, smooth, brown or black with pale outgrowth near stalk
Species in genus: 2 species: CA, Baja CA
Etymology: (Greek: tree poppy)


D. harfordii Kellogg


Tree or shrub, 2–6 m
Leaf 3–8 cm, 15–45 mm wide (1.5–3 X longer than wide), tip generally rounded, margin entire
Flower: petals 20–30 mm
Fruit 7–10 cm
Seed 2.5–3 mm
Ecology: UNCOMMON. Shrubby slopes
Elevation: < 600 m.
Bioregional distribution: Channel Islands
Synonyms: D. rigida subsp. h. (Kellogg) P.H. Raven
Plants with paler leaves from s ChI (extant on Santa Catalina Island) have been called var. rhamnoides (Greene) Munz [= D. rigida subsp. rhamnoides (Greene) Thorne, island tree poppy]
Horticultural information: SUN, DRN, DRY: 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; CVS.

Information on Seed Size was contributed by Sean Watts (17 Jan 2004):
SEED 25 - 30 mm, should be 2.5 - 3mm (Generic description is 2 - 3mm)

previous taxon | next taxon
bioregional map for DENDROMECON%20harfordii being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Dendromecon harfordii
Retrieve dichotomous key for Dendromecon
Retrieve multiple-entry key (MEKA) for Dendromecon
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
  • This page is no longer being maintained.

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