Comments
(
Inglês
)
fornecido por eFloras
Pellaea andromedifolia comprises three cytotypes: a sexually reproducing diploid, an apogamous triploid, and an apogamous tetraploid. Isozyme studies by G. J. Gastony and L. D. Gottlieb (1985) suggested that the apogamous triploid is an autopolyploid derived from sexual diploid populations. The apogamous tetraploid apparently resulted from hybridization between diploid and triploid individuals. These cytotypes have not been formally recognized as subspecies because their ranges seem to overlap extensively and because the ploidy level of the type collection of P . andromedifolia is not known.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
Inglês
)
fornecido por eFloras
Stems creeping, horizontal, slender, 2--4 mm diam.; scales mostly bicolored, narrowly lanceolate, largest scales 0.3--0.8 mm wide, centers black, thick, margins brown, thin, irregularly dentate. Leaves monomorphic, scattered along stem, 10--60 cm; croziers not conspicuously pubescent, densely scaly. Petiole straw-colored, tan, or gray, not lustrous, rounded or slightly flattened adaxially, without prominent articulation lines. Blade elongate-deltate, usually 3-pinnate proximally, 3--20 cm wide; rachis tan throughout, straight to slightly flexuous, rounded or flattened adaxially, glabrous or pubescent. Pinnae ascending or perpendicular to rachis, not decurrent on rachis, with 8--50 ultimate segments; costae usually straight, 15--140 mm, longer than ultimate segments. Ultimate segments elliptic to ovate, 3--15 mm, somewhat herbaceous, glabrous to sparsely pubescent abaxially; margins recurved on fertile segments, usually covering less than 1/2 abaxial surface, borders whitish, entire; apex retuse to rounded. Veins of ultimate segments evident. Sporangia short-stalked, containing 64 or 32 spores, not intermixed with farina-producing glands. 2 n = 58; n = 2 n = 87, 116, apogamous.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
Inglês
)
fornecido por eFloras
Calif., Oreg.; Mexico in Baja California.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
Inglês
)
fornecido por eFloras
Sporulating late spring--summer. Rocky slopes and ledges, usually on igneous substrates; 0--1500m.
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
Inglês
)
fornecido por eFloras
Pteris andromedifolia Kaulfuss, Enum. Filic., 188. 1824; Pellaea andromedifolia var. pubescens D. C. Eaton
- licença
- cc-by-nc-sa-3.0
- direitos autorais
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comprehensive Description
(
Inglês
)
fornecido por EOL authors
''Pellaea andromedifolia'' occurs in southern Oregon, California and Baja California. Within California it is found in the North Coast Ranges, Cascade Range Foothills, Sierra Nevada, central western California and southwestern California.
Pellaea andromedifolia
(
Inglês
)
fornecido por wikipedia EN
Pellaea andromedifolia, with the common names coffee cliffbrake and coffee fern, is a species of cliff brake fern in the Cheilanthoideae subfamily of the Pteridaceae.[2] It is native to California in the United States and Baja California in Mexico.
Description
This plant does not have the immediately recognizable sharply pointed leaflets on its fronds that many other ferns have. Its leaves bear rounded or oval-shaped segments widely spaced along the rachis. Each segment may curl under along its edges. The leaves are green when new, then turn red, purplish, or brown.
Some individuals of this species are diploid and reproduce sexually, while some are triploid or tetraploid and reproduce by apogamy (growth of a plant from a gamete without fertilization).
Habitat
Pellaea andromedifolia is found on dry slopes in coastal, Mojave Desert, and California chaparral and woodlands habitats. It is able to take long periods without water, when it will shrivel and appear dead. Then shortly after rainfall new growth appears quickly from the ground. It is not crown forming, but spreading slowly and forming clumps.
References
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia authors and editors
Pellaea andromedifolia: Brief Summary
(
Inglês
)
fornecido por wikipedia EN
Pellaea andromedifolia, with the common names coffee cliffbrake and coffee fern, is a species of cliff brake fern in the Cheilanthoideae subfamily of the Pteridaceae. It is native to California in the United States and Baja California in Mexico.
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia authors and editors
Pellaea andromedifolia
(
Vietnamita
)
fornecido por wikipedia VI
Pellaea andromedifolia là một loài thực vật có mạch trong họ Adiantaceae. Loài này được (Kaulf.) Fée miêu tả khoa học đầu tiên năm 1852.[1]
Hình ảnh
Chú thích
Tham khảo
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia tác giả và biên tập viên
Pellaea andromedifolia: Brief Summary
(
Vietnamita
)
fornecido por wikipedia VI
Pellaea andromedifolia là một loài thực vật có mạch trong họ Adiantaceae. Loài này được (Kaulf.) Fée miêu tả khoa học đầu tiên năm 1852.
- licença
- cc-by-sa-3.0
- direitos autorais
- Wikipedia tác giả và biên tập viên
.jpg)
.jpg)
