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.



Annual to tree
Leaves simple to pinnately to palmately compound, generally alternate; stipules free to fused, persistent to deciduous
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, often with bractlets alternate with sepals; sepals generally 5; petals generally 5, free; stamens (0)5–many, pistils (0)1–many, simple or compound; ovary superior to inferior, styles 1–5
Fruit: achene, follicle, drupe, pome, or blackberry- to raspberry-like
Seeds generally 1–5
Genera in family: 110 genera, ± 3000 species: worldwide, especially temp. Many cultivated for ornamental and fruit, especially Cotoneaster , Fragaria , Malus , Prunus , Pyracantha, Rosa , and Rubus
Reference: [Robertson 1974 J Arnold Arbor 55:303–332,344–401,611–662]
Family description, key to genera by Barbara Ertter and Dieter H. Wilken.


Barbara Ertter

Perennial; glands inconspicuous
Stem ascending to erect
Leaves generally basal, odd-1-pinnate; leaflets lobed, unevenly toothed, often alternately large and small
Inflorescence: generally cyme, open
Flower: hypanthium shallow; bractlets generally 5; sepals 5; petals 5; stamens > 20; pistils many, ovaries superior, continuous to style at top
Fruit: achene ± flat; style long, persistent
Species in genus: 40–50 species: generally n temp, arctic
Etymology: (Latin: ancient name)


G. macrophyllum Willd.


Plant tufted, drying greenish
Stem generally 20–100 cm
Leaf generally 10–45 cm; main leaflets generally 2–4 per side, generally << terminal leaflet; terminal leaflet generally 8–10 cm, ± bluntly cordate-reniform, 3-lobed < 3/4 to base, irregularly toothed
Inflorescence generally 3–10-flowered; pedicels straight
Flower rotate; bractlets generally ± 2 mm, linear, often some missing; sepals reflexed, 3–5 mm; petals 3–7 mm, obovate-round, shallowly notched, yellow, deciduous
Fruit: achene body 2.5–3.5 mm; style 2.5–5 mm, hooked below generally deciduous tip, glabrous to glandular
Chromosomes: n=21
Ecology: Meadows, streambanks
Elevation: < 3300 m.
Bioregional distribution: Northwestern California, High Cascade Range, High Sierra Nevada, San Bernardino Mountains, Great Basin Floristic Province
Distribution outside California: to n&e N.America
Flowering time: May–Aug
Varieties indistinct in CA. Some plants from s SNH approach G. aleppicum
Horticultural information: 4, 5, 6 &IRR: 1, 2, 7, 15, 16, 17 &SHD: 3, 14, 18, 19, 20, 21, 22, 23, 24; rather INV.

previous taxon | next taxon
bioregional map for GEUM%20macrophyllum 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 Geum macrophyllum
Retrieve dichotomous key for Geum
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