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Sphaeropteris cooperi

Higher Taxonomy
Family: CyatheaceaeView Description 

Habit: Trees; rhizome modified as a trunk, generally short-creeping, ascending, or erect; scales especially on trunk tip, stipe bases, small to generally large, generally uniformly tan to brown, among hairs or not. Leaf: generally tufted or short-spaced, 1--1.5[6] m, generally +- alike; stipe firm, not easily crushed, base darker or not; blade [1]2[3]-pinnate [(simple)], +- glabrous or with hairs, hair-like scales, or gland-tipped hairs on axes, veins generally free (netted); axes generally grooved adaxially. Sporangia: sori +- spheric; indusia 0 [saucer- or cup-like to spheric]; spores variously ornamented, scar 3-rayed. Chromosomes: x=69.
Genera In Family: 5--6 genera, +- 600 species: worldwide, generally tropics. Note: Some recognize only 1 genus in family.
eFlora Treatment Author: Thomas J. Rosatti
Scientific Editor: Alan R. Smith.
Genus: SphaeropterisView Description 

Habit: Trunk generally 1, often thickened by fibrous mass of adventitious roots basally, generally with distinct, +- round or oblong leaf scars. Leaf: generally 2-pinnate, stipe scales of various sizes, not intergrading with hairs or black spines, cells of +- 1 size, orientation (not clearly smaller, of different orientation on margin). Sporangia: sori in 1 row on each side of pinnule lobe midvein.
Species In Genus: +- 100 species: +- worldwide, southern temperate, tropics (except Africa). Etymology: (Greek: sphere, fern, for sori)
eFlora Treatment Author: Thomas J. Rosatti
Reference: Clark & Summers 2013 Madroño: in press

Sphaeropteris cooperi (Hook. ex. F. Muell.) R.M. Tryon
Habit: Trunk < 1 [15] m, 10--15 cm diam. Leaf: 1--1.5[6] m; stipe <= 50 cm, basal scales <= 50 mm, +- 0.1--5 mm wide, +- white or tan, translucent, among much shorter, bristle-like, dark hairs, margins with bristle-like teeth; blade <= 3.5 m, narrow-elliptic or lanceolate; pinnae <= 65 cm; pinnules <= 12 cm, <= 2.5 cm wide, pinnately lobed +- to midribs (i.e. making frond nearly 3-pinnate), lobes crenate-serrate.
Ecology: Coastal, open, rocky cliff faces, in granitic or sedimentary sandstone soils in fog belt; Elevation: < 220 m. Bioregional Distribution: s ChI (Santa Catalina Island); Distribution Outside California: Oregon, Hawaii, western Australia; native to eastern Australia. Note: 20+ pls, 4+ years old, in California population; can survive wide range of conditions, especially with adequate water, so spread is expected. Commonly sold in nurseries in coastal California, southern Oregon.
Synonyms: Cyathea cooperi (Hook. ex F. Muell.) Domin;
eFlora Treatment Author: Thomas J. Rosatti
Reference: Clark & Summers 2013 Madroño: in press
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Citation for this treatment: Thomas J. Rosatti 2013, Sphaeropteris cooperi, in Jepson Flora Project (eds.) Jepson eFlora, Revision 1,, accessed on September 24, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on September 24, 2018.

Geographic subdivisions for Sphaeropteris cooperi:
s ChI (Santa Catalina Island);
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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 occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.