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Annual to shrub; hairs simple, stellate, or glandular; plants in several genera scaly, mealy, or powdery from collapsed glands; monoecious, dioecious, with bisexual flowers, or with both bisexual and unisexual flowers. Stem: occasionally fleshy. Leaf: blade simple, generally alternate, occasionally fleshy or reduced to scales, veins pinnate; stipules 0. Inflorescence: raceme, spike, catkin-like, spheric head, axillary clusters of flowers, or flowers 1; bracts 0–5, herbaceous, generally persistent or strongly modified in fruit, wings, tubercles or spines present or 0. Flower: bisexual or unisexual, small, generally green; calyx parts (1)3–5, or 0 in pistillate flowers, free or fused basally (or ± throughout), leaf-like in texture, membranous, or fleshy, deciduous or not, often strongly modified in fruit; corolla 0; stamens 1–5, opposite sepals, filaments free, equal; anthers 4-chambered; ovary superior (1/2-inferior), chamber 1; ovule 1; styles, stigmas 1–4 (or stigmas sessile). Fruit: achene or utricle, generally falling with persistent calyx or bracts. Seed: 1, small, lenticular to spheric; seed coat smooth to finely dotted, warty, net-like, or prickly, margin occasionally winged.
100 genera, 1500 species: worldwide, especially deserts, saline or alkaline soils; some cultivated for food (Beta vulgaris subsp. vulgaris, beet, Swiss chard; Spinacia oleracea L., spinach; Chenopodium quinoa Willd., quinoa); and some worldwide, naturalized ruderal or noxious agricultural weeds. Nitrophila treated in Amaranthaceae, Sarcobatus treated in Sarcobataceae. Key to genera revised by Elizabeth H. Zacharias to incorporate Extriplex and Stutzia, 2 genera segregated from Atriplex. —Scientific Editors: Bruce G. Baldwin, David J. Keil, Thomas J. Rosatti.
Key to Chenopodiaceae
Annual, generally glabrous, generally powdery when young. Stem: prostrate to ascending, simple or branched from base, not branched distally, ultimate branches not thread-like. Leaf: generally reduced distally on stem, ± lanceolate to oblanceolate or spoon-shaped, entire or not, tip obtuse to rounded. Inflorescence: clusters generally axillary, 4–15-flowered; bracts leaf-like. Flower: bisexual or pistillate; sepals (0)1–3, ± green; stamens 0–1(2); stigmas 2, fused at base. Fruit: ± flattened; wall pitted to tubercled, free from seed or not. Seed: generally vertical, lenticular, smooth, brown to black.Key to Monolepis
5 species: temperate western North America, South America, central and northeastern Asia. (Greek: 1 scale, from sepal number in most species) [Holmgren 2003 FNANM 4:300–301] Monolepis pusilla moved to Micromonolepis.
Plant 2–20 cm, glabrous to sparsely powdery. Stem: decumbent to erect. Leaf: 3–25 mm, narrowly oblanceolate to spoon-shaped, fleshy, entire. Inflorescence: flowers 4–15+ per cluster. Flower: outer pistillate, sepals 0; central bisexual, sepals 2–3, 0.5 mm, spoon-shaped to obovate; stamens 1–2. Fruit: 0.5–0.7 mm; wall minutely papillate, free from seed.
n=9. Moist, ± alkaline streambanks and meadows; 2000–2700 m. High Sierra Nevada, San Bernardino Mountains, East of Sierra Nevada; to Oregon, Nevada, Baja California. Jun–Sep [Online Interchange]
Previous taxon: Monolepis nuttalliana
Next taxon: Salicornia
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 21 2014
Citation for this treatment: [Author of taxon treatment] 2013. Monolepis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=33964, accessed on Dec 21 2014
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|Geographic subdivisions indicated for the distribution of Monolepis spathulata|| 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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