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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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SALICACEAE

WILLOW FAMILY

Shrub, tree, generally dioecious (rarely monoecious)
Stem: trunk < 40 m; wood soft; bark smooth, bitter; buds scaly
Leaves simple, alternate, deciduous; stipules generally deciduous, often large
Inflorescence: catkin, generally appearing before leaves; each flower subtended by disk or 1–2 nectary glands and 1 bract
Flower: perianth 0
Staminate flower: stamens 1–many
Pistillate flower: pistil 1, ovary superior, chamber 1, stigma lobes 2–4
Seeds many; hairs fine, white, cottony
Fruit: capsule; valves 2–4
Genera in family: 2 genera, 340 species: generally temp (except Australia, Malay Archipelago) moist places; many cultivated. Hybridization common; identification often difficult. Family description, key to genera by John O. Sawyer, Jr.

SALIX

WILLOW

George W. Argus

Shrub, tree, dioecious; bud scale 1, not sticky, margins generally fused (or free, overlapping)
Stem: twigs generally flexible and not glaucous
Leaf: blade linear to widely obovate, entire to toothed, generally ± hairy
Inflorescence: dense catkin emerging before, with, or after leaves, sessile or on a short leafy shoot; bract subtending each flower
Flower: perianth 0
Staminate flower: stamens 1–8
Pistillate flower: ovary stalked or sessile, style 1 or 0, stigmas 2, each sometimes 2-lobed; nectaries 1–several, generally rod-like, generally between inflorescence axis and flower
Fruit: valves 2
Species in genus: ± 400 species: ± worldwide, especially n temp, arctic
Etymology: (Latin: ancient name)
Reference: [Argus 1986 Syst Bot Monog 9:1–170; Dorn 1976 Canad J Bot 54:2769–2789]
Difficult, highly variable. Not all specimens will key easily; sprout shoots and other extreme forms are not included in keys, may require field comparison for identification. Studies of variation, hybridization needed.

Native

S. lucida Muhl.

SHINING WILLOW

Shrub, tree, < 10 m
Stem: twigs brownish, glabrous or soft-shaggy-hairy, sometimes brittle at base
Leaves: stipules glandular-lobed; petiole with glands; young leaves glabrous or white- or white-and-rusty-hairy; mature blade 53–170 mm, lanceolate, long-acuminate (base acute to rounded), finely serrate, glabrous or becoming so, shiny above, glaucous or not below
Inflorescence appearing with leaves, 20–90 mm, on leafy shoots 8–45 mm; flower bract tawny; pistillate bract deciduous after flower
Staminate flower: stamens 3–5
Pistillate flower: ovary glabrous, style 0.2–0.6 mm, stalk 0.8–2 mm
Chromosomes: 2n=76
Ecology: Wet places
Elevation: < 3200 m.
Bioregional distribution: California
Distribution outside California: to Alaska, w Canada, Nevada

Native

subsp. lasiandra (Benth.) E. Murray


Ecology: Common. Wet meadows, shores, seepage areas
Elevation: 0–2700 m.
Bioregional distribution: California (less common in s California, Desert)
Flowering time: Mar–May
Synonyms: S. lasiandra Benth. including vars. abramsii C.R. Ball and lancifolia (Andersson) Bebb
Horticultural information: WET: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24; STBL.

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bioregional map for SALIX%20lucida%20subsp.%20lasiandra being generated
 
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Retrieve Jepson Interchange Index to Plant Names entry for Salix lucida subsp. lasiandra
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