|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)45; stamens 45, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):128. See glossary p. 25 for illustrations of general family characteristics.
Leaves generally opposite; blade elliptic to triangular, margin entire to lobed
Inflorescence: heads discoid, solitary or in ± flat-topped cymes; phyllaries subequal, in 12(3) series; receptacle flat to conic, naked
Flowers 1060; corollas ± white or blue to pink-tinged, cylindric (or throat wider)
Fruit 5-angled, generally 5-ribbed; pappus of 540 slender scabrous bristles, often easily detached
Etymology: (Latin: resembling Ageratum )
Reference: [King & Robinson 1987 Monogr Syst Bot Missouri Bot Garden 22:428436]
Perennial; caudex woody, ± rhizomatous
Stem 1.57 dm, erect or ascending, ± green or purple, puberulent
Leaves generally alternate; blade ± triangular, ± serrate, glandular
Inflorescence: heads 810 mm, clustered; phyllaries puberulent
Flower: corollas ± white to blue
Fruit 33.5 mm
Ecology: Common. Rocks
Elevation: 21003700 m.
Bioregional distribution: Northwestern California, High Cascade Range, Sierra Nevada, Warner Mountains, n East of Sierra Nevada, White and Inyo Mountains
Distribution outside California: to Washington, Idaho, Utah
Flowering time: JulSep
Synonyms: Eupatorium o. Hook
Plants from SN are smaller than those from NCoR
Horticultural information: DRN, SHD: 2, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21; DFCLT.
|YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).|