|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Annual to subshrub; monoecious and/or dioecious; occasionally spiny; hairs simple (branched). Leaf: blade simple, alternate or opposite, margins entire or serrate; veins pinnate; stipules 0. Inflorescence: axillary or terminal; 3-flowered cymes in dense spikes, heads or panicles; bracts 0 or 1–5, persistent; bractlets 0–2. Flower: bisexual or unisexual, small, green (± white), yellow or purple; perianth parts 0 or (1)3–5, free or fused basally, scarious or hardened, persistent; stamens 1–5, opposite perianth parts, free or basally fused as a tube, generally unequal, occasionally alternate with appendages on stamen tubes (pseudostaminodes), anthers 2- or 4-chambered; ovary superior, chamber 1; ovule 1 (2–many); style (0)1–3, stigmas 1–3(5). Fruit: utricle; generally with persistent perianth or bracts. Seed: 1 [2+], small, lenticular to spheric, smooth or dotted to striate or tubercled.
± 75 genera, 900 species: cosmopolitan, especially disturbed, arid, saline or alkaline soils; some cultivated for food, ornamental; many naturalized, ruderal or agricultural weeds. [Müller & Borsch 2005 Ann Missouri Bot Gard 92:66–102] Amaranthaceae including Chenopodiaceae by some. Polycnemoideae, represented in California by Nitrophila, formerly considered subfamily of Chenopodiaceae, but needs further research. Guilleminea densa (Willd.) Moq. var. aggregata Uline & W.L. Bray is a waif. Froelichia gracilis (Hook.) Moq. is an historical waif. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Unabridged references: [Kadereit et al. 2003 Int J Plant Sci 164:959–986; Robertson 1981 J Arnold Arbor 62:267–313]
Key to Amaranthaceae
Perennial herb, generally prostrate, soft-hairy to woolly, hairs simple. Leaf: opposite; petioled; blade linear or lanceolate to spoon-shaped or ovate, margins entire. Inflorescence: axillary, sessile, few-flowered heads; bracts, bractlets membranous, white, glabrous, persistent. Flower: bisexual; perianth bell-shaped, perianth parts 5, fused ± 1/2, 1-veined; stamens 5, filaments fused basally into tube attached to top of perianth tube, anthers 2-chambered, pseudostaminodes 0; ovary ovoid, ovule 1, style 1, ± 0.2 mm, stigmas 2-lobed, spheric. Fruit: utricle, wall membranous. Seed: 1 lenticular to spheric, smooth, shiny.
± 5 species: southern United States to South America. (Antoine Guillemin, French botanist, explorer, 1796–1842) [Henrickson 1987 Sida 12:307–337]
Mats 10–80 cm wide. Stem: ± densely woolly. Leaf: basal in rosettes, withering, petiole winged, 8–20 mm, blade(8)20–40 mm, (1)6–9(13) mm wide, oblong-elliptic to lanceolate, glabrous adaxially, woolly abaxially; cauline petiole 1–5 mm, blade 20–100(220) mm, 20–80(150) mm wide, ovate, oblong-ovate, oblong, rhombic, or occasionally elliptic to lanceolate, ± glabrous adaxially, woolly abaxially. Inflorescence: axillary clusters of heads 2–3 mm, 3–5 mm wide, white; bracts 1.5–2.5 mm, white-scarious. Flower: perianth 0.8–2.8 mm, tube 0.8–1.2 mm, lobes reflexed, erect in age, ovate to elliptic, tip acute to rounded, shaggy-hairy especially near tube base. Fruit: included within persistent perianth, 1.1–1.4 mm. Seed: 0.8–0.9 mm, red-brown.
Roadsides, disturbed areas; < 100 m. s Central Coast, South Coast; native Arizona to Texas, South America. Unabridged synonyms: [Brayulinea densa (Willd.) Small]
Aug–Nov [Online Interchange]
Previous taxon: Guilleminea
Next taxon: Nitrophila
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Guilleminea, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=59691, accessed on Dec 22 2014
Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Geographic subdivisions indicated for the distribution of Guilleminea densa var. aggregata|| 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.
READ ABOUT YELLOW FLAGS
(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).
View elevation by latitude chart
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month