Common Name: BIRCH FAMILY Habit: Shrub, tree; monoecious. Stem: trunk < 35 m; bark smooth to scaly, peeling in thin layers or not, lenticels present or not. Leaf: simple, alternate, petioled, deciduous; stipules deciduous; blade ovate to elliptic, generally serrate, generally +- doubly so. Inflorescence: catkin, generally appearing before leaves, often clustered; bracts each subtending 2--3 flowers, 3--6 bractlets. Staminate Inflorescence: pendent, +- elongate. Pistillate Inflorescence: pendent or erect, developing variously in fruit (see key to genera). Staminate Flower: sepals 0--4, minute; petals 0; stamens 1--10; pistil vestigial or 0. Pistillate Flower: sepals 0--4; petals 0; stamens 0; pistil 1, ovary inferior or superior, chambers 2, each 1-ovuled by abortion, stigmas 2. Fruit: achene, nut, winged or not, subtended or enclosed by 1--2 bracts. Genera In Family: 6 genera, 155 species: generally northern hemisphere; some cultivated. eFlora Treatment Author: John O. Sawyer, Jr. Scientific Editor: Thomas J. Rosatti.
Common Name: GREEN ALDER Habit: Shrub. Stem: trunks < 8 m. Leaf: blade narrow- to broad-ovate, base tapered to cordate, tip acute or short-acuminate to tapered, margin +- flat, adaxially yellow-green to dark green, hairs sparse, especially on veins, moderately to heavily resinous. Inflorescence: appearing with or before leaves. Note: 2 other subspecies in Canada, Europe.
NATIVE Stem: trunks < 8 m. Leaf: blade thin, narrow- to broad-ovate, base tapered to subcordate, tip acute to tapered, coarsely doubly serrate, adaxially yellow-green, shiny, abaxially green, glabrous or hairs restricted to or denser in major vein axils, lightly to moderately resinous. Ecology: Along creeks, seeps, meadow margins; Elevation: 1000--2700 m. Bioregional Distribution: KR, NCoRO, NCoRH, w CaRH (Grizzly Peak, Shasta Co.); Distribution Outside California: to Alaska, western Canada. Flowering Time: Spring Synonyms: Alnus sinuata (Regel) Rydb. Jepson eFlora Author: John O. Sawyer, Jr. Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Alnus viridis subsp. fruticosa Next taxon: Betula
Citation for this treatment: John O. Sawyer, Jr. 2012, Alnus viridis subsp. sinuata, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=49088, accessed on April 22, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 22, 2024.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
Data provided by the participants of the
Consortium of California Herbaria.
MAP LEGEND View all CCH records All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).
