Common Name: BUCKWHEAT FAMILY Habit: Annual to shrub [tree]. Stem: nodes swollen or not. Leaf: simple, basal or cauline, generally alternate; ocreae present or 0, generally scarious, persistent or not. Inflorescence: flower clusters in axillary to terminal cyme-, panicle-, raceme-, spike-, umbel- or head-like arrangements, entire inflorescence or main inflorescence branches generally subtended by bracts ("inflorescence bracts"); peduncles present or 0; flower clusters in Eriogoneae-Eriogonoideae subtended by involucre of >= 1 free or +- fused, sometimes awn-tipped bracts ("involucre bracts") or, in Polygonoideae and rarely in Eriogonoideae, not (if bracts completely fused, involucre "tubular"); pedicels in Eriogoneae each often subtended by 2 free, transparent, linear bractlets or in Polygonoideae all subtended by 2+ fused, membranous, wide bractlets. Flower: generally bisexual, small, 1--200 per node; perianth parts 2--6, generally in 2 whorls, free or basally fused, generally petal-like, often +- concave adaxially, often darker at midvein, often turning +- red or +- brown in age; stamens [1]3 or 6--9 in 2 whorls; ovary superior, 1-chambered, ovule 1, styles 1--3. Fruit: achenes, included in or exserted from perianth, generally 3-angled, ovoid or elliptic, generally glabrous. Genera In Family: 48 genera, +- 1200 species: worldwide, especially northern temperate; some cultivated for food (Coccoloba, sea-grape; Fagopyrum, Rheum, Rumex) or ornamental (Antigonon, lovechain; Coccoloba; Muehlenbeckia; Persicaria; Polygonum), a few timbered (Coccoloba; Triplaris). Several (Emex; Fallopia; Persicaria; Polygonum; Rumex) are weeds. Note: Treatment of genera in Eriogonoideae based on monographic work of James L. Reveal. Involucre number throughout is number (1--many) per ultimate grouping, at tips of ultimate branches; flower number is per flower cluster or involucre, unless otherwise stated. Fagopyrum esculentum Moench not naturalized, considered an historical waif (or garden weed +- presently), therefore not treated. eFlora Treatment Author: Mihai Costea, except as noted Scientific Editor: Thomas J. Rosatti, Bruce G. Baldwin.
Common Name: WILD BUCKWHEAT Habit: Annual to shrub, matted or not. Stem: prostrate to erect, occasionally 0, glabrous or hairy, occasionally glandular. Leaf: basal, sheathing (on stem above basal, beneath other, +- non-sheathing cauline), or cauline, alternate, opposite, or whorled; blades linear to +- round, generally longer than wide, margins flat, wavy, or rolled under; ocreae 0. Inflorescence: variable, glabrous or hairy, occasionally glandular; peduncles 0 or erect to reflexed (pointed down); involucres 1 or in clusters, tubular, glabrous or hairy, teeth generally 4--10, awns 0. Flower: (2)6--100(200), with a stalk-like base ("flower stipe" or "stipe") or not; perianth generally white to red or yellow, glabrous or hairy, occasionally glandular, lobes 6, generally entire; stamens 9. Fruit: generally brown or black, generally obconic, glabrous or hairy; embryo curved or straight. Etymology: (Greek: woolly knees, for hairy nodes of 1st sp. named) Note: One of largest genera in California; stem in descriptions refers to the main stem(s), not branches of inflorescence. A perennial herb allied to Eriogonum austrinum (S. Stokes) Reveal and Eriogonum moranii Reveal of east-central Baja California, with spreading (rather than reflexed or erect) involucres on peduncles < 2 mm, occurring in DMtns (Bristol, Granite mountains), has been known for nearly 25 years yet remains undescribed. Eriogonum puberulum moved to Johanneshowellia. eFlora Treatment Author: James L. Reveal & Thomas J. Rosatti
Eriogonum plumatella Durand & Hilg.
NATIVE Habit: Shrub 3--10(12) dm, 3--6(8) dm diam. Stem: 0.5--2 dm, tomentose or glabrous. Leaf: basal and cauline; blades 0.6--1.5 cm, 0.2--0.3 cm wide, generally tomentose. Inflorescence: 15--40 cm; branches zigzag, generally spreading, tiered, tomentose or glabrous; peduncles 0; involucres 2--2.5 mm, 1.5--2 mm wide, glabrous. Flower: 2--2.5 mm, glabrous; perianth white to pale yellow, outer lobes obovate, inner oblong. Fruit: 2.5--3 mm, glabrous. Ecology: Common. Sand or gravel; Elevation: 400--1700 m. Bioregional Distribution: D; Distribution Outside California: to southern Nevada, northwestern Arizona. Flowering Time: Apr--Oct Synonyms: Eriogonum nodosum Small var. jaegeri Munz & I.M. Johnst.; Eriogonum palmeri S. Watson; Eriogonum plumatella var. jaegeri (Munz & I.M. Johnst.) S. Stokes ex Munz Jepson eFlora Author: James L. Reveal & Thomas J. Rosatti Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Eriogonum pendulum Next taxon: Eriogonum polycladon
Botanical illustration including Eriogonum plumatella
Citation for this treatment: James L. Reveal & Thomas J. Rosatti 2012, Eriogonum plumatella, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24908, accessed on November 13, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on November 13, 2024.
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