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Antennaria

Antennaria
Family: Asteraceae
Antennaria image
Liz Makings
  • FNA
  • Gleason & Cronquist
  • Resources
Randall J. Bayer in Flora of North America (vol. 19, 20 and 21)
Perennials or subshrubs (dioecious, gynoecious, or polygamodioecious), (0.2-)4-25(-70) cm (sometimes cespitose, sometimes stoloniferous, sometimes rhizomatous). Stems erect. Leaves basal and cauline; alternate; petiolate or sessile; blades (1-7-nerved) mostly cuneate, elliptic, lanceolate, linear, oblanceolate, or spatulate, margins entire, abaxial faces usually tomentose, adaxial glabrous or ± tomentose to sericeous or glabrescent. Heads discoid (unisexual), borne singly or in corymbiform, paniculiform, racemiform, or subcapitate arrays. Involucres: staminate campanulate to hemispheric, 2-6+ mm diam.; pistillate turbinate or campanulate to cylindric, 3-7(-9+) mm diam. Phyllaries in 3-6+ series, usually relatively narrow, unequal (proximally papery or membranous; distally ± scarious, often black, brown, castaneous, cream, gray, green, olivaceous, pink, red, white, or yellow), apices usually acute, sometimes obtuse to ± truncate. Receptacles flat to convex or ovoid, foveolate, epaleate. Ray florets 0. Disc florets mostly 20-100+, (functionally) staminate or pistillate; staminate corollas white, yellow, or red, narrowly funnelform or tubular (lobes usually 5, erect to recurved); pistillate corollas white, yellow, or red, narrowly tubular to filiform. Cypselae mostly ellipsoid to ovoid, faces usually glabrous, often papillate (stout, myxogenic twin-hairs); pappi: falling (bristles basally connate or coherent, shed together in rings or in groups); staminate usually of 10-20+ (usually ± clavate, sometimes capillary, barbellate to barbellulate) bristles; pistillate usually of 12-20+ (capillary, barbellulate to smooth) bristles. x = 14.
Vascular plants of NE US and adjacent Canada
Dioecious; invol bracts imbricate in several series, scarious at least at the tip, white or often colored; receptacle flat or convex, naked; staminate heads discoid, with tubular corollas, usually undivided styles, and scanty pappus, the bristles commonly barbellate or clavellate; anthers tailed; pistillate heads disciform, with filiform-tubular cors, bifid styles, and copious pappus of capillary, naked bristles weakly united at base; achenes nerveless, terete or nearly so, glabrous or papillate; woolly perennial herbs, ours fibrous-rooted, stoloniferous, and mat-forming or colonial; lvs alternate, simple, entire, in our spp. the largest ones basal and at the ends of the stolons; heads rather small, (1-) several in terminal infls; x=14. 30+, mainly N. Amer., especially the w. cordillera. Our spp. 3-6 form a polyploid-apomictic complex. Absence of staminate plants from a local population indicates apomixis.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within checklist: Denver-Boulder Metropolitan Area
Antennaria alpina
Media resource of Antennaria alpina
Map not
Available
Antennaria anaphaloides
Media resource of Antennaria anaphaloides
Map not
Available
Antennaria corymbosa
Media resource of Antennaria corymbosa
Map not
Available
Antennaria dioica
Media resource of Antennaria dioica
Map not
Available
Antennaria howellii
Media resource of Antennaria howellii
Map not
Available
Antennaria marginata
Media resource of Antennaria marginata
Map not
Available
Antennaria media
Media resource of Antennaria media
Map not
Available
Antennaria microphylla
Media resource of Antennaria microphylla
Map not
Available
Antennaria neglecta
Media resource of Antennaria neglecta
Map not
Available
Antennaria parviflora
Media resource of Antennaria parviflora
Map not
Available
Antennaria parvifolia
Media resource of Antennaria parvifolia
Map not
Available
Antennaria pulcherrima
Media resource of Antennaria pulcherrima
Map not
Available
Antennaria rosea
Media resource of Antennaria rosea
Map not
Available
Antennaria rosulata
Media resource of Antennaria rosulata
Map not
Available
Antennaria umbrinella
Media resource of Antennaria umbrinella
Map not
Available
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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