Directory       News       Site Map       Home
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon


Thomas J. Rosatti

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.
5–6 genera, ± 600 species: worldwide, generally tropics. [Lehnert 2011 Brittonia 63:11–45] Some recognize only 1 genus in family. —Scientific Editor: Alan R. Smith.

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.
± 100 species: ± worldwide, southern temperate, tropics (except Africa). (Greek: sphere, fern, for sori) [Clark & Summers 2013 Madroño: in press]

S. cooperi (F. Muell.) R.M. Tryon COOPER'S TREE FERN
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.
Coastal, open, rocky cliff faces, in granitic or sedimentary sandstone soils in fog belt; < 220 m. s Channel Islands (Santa Catalina Island); Oregon, Hawaii, western Australia; native to eastern Australia. [Cyathea cooperi (F. Muell.) Domin] 20+ plants, 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. [Online Interchange]
Unabridged note: Expanded author citation: Cyathea cooperi (Hook. ex F. Muell.) Domin; Sphaeropteris cooperi (Hook. ex. F. Muell.) R.M. Tryon

Previous taxon: Sphaeropteris
Next taxon: Dennstaedtiaceae


Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Sphaeropteris, Revision 1, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 29 2015

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.

Geographic subdivisions indicated for the distribution of Sphaeropteris cooperi Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records


CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.