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Vascular Plants of California
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Pyrrocoma uniflora var. gossypina

BEAR VALLEY PYRROCOMA


Higher Taxonomy
Family: Asteraceae (Compositae)View DescriptionDichotomous Key
Common Name: SUNFLOWER FAMILY
Habit: Annual to tree. Leaf: basal and/or cauline, alternate, opposite, rarely whorled, simple to 2+ × compound. Inflorescence: 1° inflorescence a head, resembling a flower, of several types (see below), 1--many in generally +- cyme-like cluster; each head generally with +- calyx-like involucre of 1--many series of phyllaries (involucre bracts); receptacle of head flat to conic or columnar, paleate (bearing paleae = receptacle bracts) or epaleate; flowers 1--many per head. Flower: bisexual, unisexual, or sterile, +- small, of several types (see below); calyx 0 or modified into +- persistent pappus of bristles, scales, and/or awns; corolla radial or bilateral (0), lobes generally (0)3--5; stamens 4--5, filaments generally free, generally fused to corolla at tube/throat junction, anthers generally fused into cylinder around style, anther base generally rounded or cordate (deeply sagittate or with tail-like appendages), tip (= flattened appendage) generally projecting beyond pollen sac; pistil 1, 2-carpeled, ovary inferior, 1-chambered, 1-seeded, placenta basal, style 1, tip generally +- 2-branched (except in some staminate disk flowers), branch tips truncate or generally bearing +- brush-like appendages; stigmas 2, generally on adaxial faces of style branches. Fruit: achene (also called a cypsela) (drupe in Chrysanthemoides), cylindric to ovoid, sometimes compressed, generally deciduous with pappus attached.
Genera In Family: +- 1500 genera, 23000 species: worldwide, many habitats. Note: Flower and head types differ in form and sexual condition. A disk flower has a generally radial corolla, with a cylindric tube, expanded throat, and generally 5 lobes. Disk flowers are generally bisexual and fertile but occasionally staminate with reduced ovaries. Discoid heads comprise only disk flowers. A radiant head is a variant of a discoid head, with peripheral disk flower corollas expanded, often bilateral. A ray flower corolla is bilateral, generally with a slender tube and flattened petal-like ray (single lip composed of generally 3 lobes). Ray flowers are generally pistillate or sterile (occasionally lacking styles). Radiate heads have peripheral ray flowers and central disk flowers. Disciform heads superficially resemble discoid heads, with pistillate or sterile flowers that lack rays, together with or separate from disk flowers. A ligulate flower is bisexual, with a bilateral, generally ephemeral corolla and 5-lobed ligule. Liguliflorous heads comprise only ligulate flowers. See glossary p. 31 for illustrations of family characteristics. Echinops sphaerocephalus L., Gaillardia aristata Pursh, Gaillardia pulchella Foug., Hymenothrix loomisii S.F. Blake, Tagetes erecta L., Thelesperma megapotamicum (Spreng.) Kuntze are waifs. Melampodium perfoliatum Kunth, historic urban waif. Ageratum conyzoides L., Guizotia abyssinica (L. f.) Cass., Santolina chamaecyparisus L., orth. var. are rare or uncommon escapes from cultivation. Dyssodia papposa, Ismelia carinata (Schousb.) Sch. Bip. [Chrysanthemum carinatum Schousb.], Mantisalca salmantica (L.) Briq. & Cavill. are historical or extirpated waifs in California. Inula helenium L. not documented in California. Taxa of Aster in TJM (1993) treated here in Almutaster, Doellingeria, Eurybia, Ionactis, Oreostemma, Sericocarpus, Symphyotrichum; Chamomilla in Matricaria; Bahia in Hymenothrix; Cnicus in Centaurea; Conyza in Erigeron and Laennecia; Dugaldia in Hymenoxys; Erechtites in Senecio; Hymenoclea in Ambrosia; Lembertia in Monolopia; Osteospermum ecklonis in Dimorphotheca; Picris echioides in Helminthotheca; Prionopsis in Grindelia; Raillardiopsis in Anisocarpus and Carlquistia; Schkuhria multiflora in Picradeniopsis; Trimorpha in Erigeron; Venidium in Arctotis; Viguiera in Aldama and Bahiopsis; Whitneya in Arnica. Amauriopsis in TJM2 (2012) treated here in Hymenothrix; Arida in Leucosyris; Bahia in Picradeniopsis; Eucephalus in Doellingeria.
Unabridged Note: Largest family of vascular plants in California and of eudicots globally.
eFlora Treatment Author: David J. Keil, except as noted
Scientific Editor: David J. Keil, Bruce G. Baldwin.
Genus: PyrrocomaView DescriptionDichotomous Key

Habit: Perennial herb from woody taproot. Stem: 1--many, decumbent to erect, generally red-tinged. Leaf: basal and cauline, alternate, entire, toothed, or sharply lobed, glabrous to tomentose or glandular; basal petioled; cauline generally clasping, +- reduced. Inflorescence: heads generally radiate, 1--30+; involucre hemispheric to bell-shaped; phyllaries +- equal or +- graduated in 2--6 series, herbaceous; receptacle flat to weakly convex, epaleate. Ray Flower: 10--80; corolla 2--35 mm, ray adaxially yellow, abaxially yellow to orange or red. Disk Flower: 20--100+; corolla 5--15 mm, cylindric to funnel-shaped, yellow. Fruit: 3--4-angled, generally hairy; pappus bristles 15--60, generally rigid, unequal.
Etymology: (Greek: +- red hair, describing pappus)
eFlora Treatment Author: David J. Keil & Gregory K. Brown
Reference: Bogler 2006 FNANM 20:413--424
Unabridged Reference: Mayes 1976 Ph.D. Dissertation, Univ of Texas, Austin
Species: Pyrrocoma unifloraView Description 


Common Name: PLANTAIN GOLDENWEED
Stem: 7--38 cm. Leaf: +- tomentose or woolly; basal 3--12 cm, (ob)lanceolate, sharply dentate to cut; cauline few, clasping, reduced. Inflorescence: heads 1(4), in raceme-like cluster; involucre 6--13 mm, 11--20 mm diam, hemispheric; phyllaries barely or not overlapping in 2--3 series, 6--12 mm, +- linear, herbaceous, generally tomentose to woolly. Ray Flower: 25--45; ray 7--11 mm. Disk Flower: 35--60; corolla 5--8 mm. Fruit: +- 3--4 mm, 3--4-angled, silky; pappus +- 5--8 mm, tan.

Pyrrocoma uniflora (Hook.) Greene var. gossypina (Greene) Kartesz & Gandhi
NATIVE
Habit: Herbage woolly-tufted. Inflorescence: involucre 10--13 cm; phyllaries unequal.
Ecology: Meadows and seeps, stony slopes; Elevation: 1600--2300 m. Bioregional Distribution: SnBr (near Baldwin Lake). Flowering Time: Jul--Sep
Synonyms: Haplopappus uniflorus (Hook.) Torr. & A. Gray subsp. gossypinus (Greene) H.M. Hall
Jepson eFlora Author: David J. Keil & Gregory K. Brown
Reference: Bogler 2006 FNANM 20:413--424
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)
Listed on CNPS Rare Plant Inventory

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Botanical illustration including Pyrrocoma uniflora var. gossypinabotanical illustration including Pyrrocoma uniflora var. gossypina


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Citation for this treatment: David J. Keil & Gregory K. Brown 2012, Pyrrocoma uniflora var. gossypina, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=8124, accessed on November 08, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on November 08, 2024.

Pyrrocoma uniflora  
var. gossypina
click for image enlargement
©2008 Thomas Stoughton
Pyrrocoma uniflora  
var. gossypina
click for image enlargement
©2008 Thomas Stoughton
Pyrrocoma uniflora  
var. gossypina
click for image enlargement
©2008 Thomas Stoughton
Pyrrocoma uniflora  
var. gossypina
click for image enlargement
©2008 Thomas Stoughton
Pyrrocoma uniflora  
var. gossypina
click for image enlargement
©2008 Thomas Stoughton

More photos of Pyrrocoma uniflora var. gossypina
in CalPhotos



Geographic subdivisions for Pyrrocoma uniflora var. gossypina:
SnBr (near Baldwin Lake).
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map of distribution 1

(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 occurrence).






 

Data provided by the participants of the  Consortium of California Herbaria.

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CCH collections by month Flowering-Fruiting Monthly Counts

Duplicates counted once; synonyms included.
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Blue line denotes eFlora flowering time (fruiting time in some monocot genera).