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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Perennial herb to shrub, rhizomed or not. Stem: leafy or scapose. Leaf: 2–15, basal or cauline, cauline clasping or sheathing, petioled [or reduced to scales, with short branches flattened, green, appearing leaf-like]. Inflorescence: terminal or axillary, panicle or raceme. Flower: unisexual or bisexual, generally white (± pink); perianth parts 4 or 6, fused or not, erect, nodding or pendent; stamens (4)6, ± fused to perianth, anthers attached near base; ovary superior, chambers 2–3, style 1, stigma ± 3-lobed. Fruit: berry, spheric, red, orange-red, or blue-black, or capsule, papery. Seed: 1–12.
26 genera, 475 species: northern hemisphere, South Africa, northern Australia; species in several genera cultivated as ornamental, house plants. Smilacina moved to Maianthemum. —Scientific Editor: Thomas J. Rosatti.
Key to Ruscaceae
Rhizome creeping. Stem: erect, simple . Leaf: alternate, generally ± clasping, lower reduced to sheathing scales. Inflorescence: terminal, raceme to panicle. Flower: perianth parts 4 or 6 in 2 petal-like whorls, white; stamens 4 or 6; ovary superior, chambers 2–3, style 1, stigmas 2–3. Fruit: berry. Seed: 1–3.Key to Maianthemum
3 species: northern temperate. (Greek: May flower, from flowering season) [LaFrankie 2002 FNANM 26:206–210] Historically divided into 2 genera, Maianthemum, Smilacina (1. vs 1' in key); otherwise ± equal morphologically, unique chromosomally.
Unabridged references: [LaFrankie, J. V. 1986. Transfer of the species of Smilacina Desf. to Maianthemum Wiggers (Liliaceae). Taxon 35:584–589; Rudall P. J. et al. 2000. Systematics of the Ruscaceae/Convallariaceae: A combined morphological and molecular investigation. Bot. J. Linn. Soc. 134:73–92]
Rhizome 1–1.5 mm diam. Stem: 10–40 cm. Leaf: 2–3, 5–20 cm, cordate to sagittate, acute to acuminate, glabrous to sparsely hairy below, few; petioles 5–15 cm. Inflorescence: raceme, 2–8 cm, 10–50-flowered. Flower: perianth parts 4, ± 2.5 mm, > stamens, reflexed to spreading, ovate to elliptic; ovary chambers 2. Fruit: ± 6 mm, red. Seed: ± 3 mm, brown.
n=18. Moist, shady, conifer forest; < 500 m. w Northwestern California, Central Coast; to Alaska, Idaho. May–Jun [Online Interchange]
Previous taxon: Maianthemum
Next taxon: Maianthemum racemosum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 1 2015
Citation for this treatment: [Author of taxon treatment] 2013. Maianthemum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=32493, accessed on Dec 1 2015
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|Geographic subdivisions indicated for the distribution of Maianthemum dilatatum|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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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).
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