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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
Subshrub, generally erect, densely tomentose, hairs stellate; monoecious or dioecious. Leaf: petioled, linear to lanceolate, flat, entire. Inflorescence: spike-like, terminal; staminate flowers distal to pistillate; pistillate flowers few, clustered, subtended by 2 ± leaf-like, densely long-hairy bracts ± fused at base. Staminate flower: perianth 4-lobed; stamens 4. Pistillate flower: perianth lobes 0; stigmas 2. Fruit: ovate, flat, fruit wall free. Seed: vertical, brown, white-hairy.
± 3 species: western North America, northern Mediterranean, temperate Asia. (S.P. Krascheninnikov, Russian botanist, 1711–1755) [Holmgren 2003 FNANM 4:307–308]
Unabridged etymology: (Stephan P. Krascheninnikov, Russian botanist, 1711–1755)
Generally 5–10 dm; hairs white, ± rust-colored in age. Leaf: 1–4 cm, 1.5–5 mm wide, margins generally inrolled; petiole 1.5–3.5 mm. Inflorescence: 3–19 cm; staminate flowers many; pistillate flowers 1–4 in proximal axils. Staminate flower: bracts 0; perianth lobes 1–2 mm, densely hairy; stamens exserted. Pistillate flower: bracts 4–7.5 mm in fruit, densely hairy; stigmas exserted. Fruit: 2.5–3.5 mm, white-hairy.
2n=18,36. Rocky to clay soils, flats, gentle slopes; 100–2700 m. Tehachapi Mountain Area, s San Joaquin Valley, Western Transverse Ranges (n slope), Great Basin Floristic Province, Mojave Desert; to Washington, north-central United States, New Mexico, northern Mexico. May–Jul [Online Interchange]
Unabridged synonyms: [Ceratoides lanata (Pursh) J.T. Howell; Eurotia lanata (Pursh) Moq.]
Previous taxon: Krascheninnikovia
Next taxon: Micromonolepis
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 23 2014
Citation for this treatment: [Author of taxon treatment] 2013. Krascheninnikovia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=30017, accessed on Nov 23 2014
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© 2004 James M. Andre
|Geographic subdivisions indicated for the distribution of Krascheninnikovia lanata|| 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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