Asplenium altajense (Komar.) Grubov
  • Bot. Mater. Gerb. Bot. Inst. Komarova Akad. Nauk S.S.S.R. 20: 33 (1960)

Cite taxon page as 'WFO (2022): Asplenium altajense (Komar.) Grubov. Published on the Internet; Accessed on: 07 Dec 2022'

General Information

Plants 5-15 cm tall. Rhizome erect, short, apex scaly; scales dark brown to black, narrowly triangular, 2-3.5 × 0.3-0.5 mm, entire. Fronds caespitose; stipe 2.5-3.5(-6) cm, base scaly and brown abaxially, green upward, adaxially green, sulcate, subglabrous; lamina 2-pinnatifid to 2-pinnate, narrowly triangular-ovate, 8-9 × 2-2.5 cm, base slightly reduced, apex acute; pinnae (5-)10-15 pairs, lower pinnae subopposite, often deltoid-flabellate or almost orbicular, upper alternate and gradually fused into 0.5-1 cm pinnatifid apex, second to fourth pair usually largest, stalk up to 1 mm and adaxially sulcate with raised supravascular ridge, middle pinnae triangular-ovate, ca. 11 × 8-10 mm, base asymmetrical, acroscopic side truncate, basiscopic side cuneate, 1-pinnate, apex obtuse; pinnules 2 or 3 pairs, anadromous, basal acroscopic pinnule free, largest, subovate, 4-5 × 2-4 mm, base cuneate, other pinnules adnate to costa and confluent into pinna apex, margins dentate-serrate, apex obtuse. Veins obscure, flabellately anadromous, slightly raised adaxially. Fronds papery, green to grayish green when dry, lamina subglabrous, average stomatal guard cell length 44-48 µm; rachis semiterete, green, adaxially sulcate and with raised supravascular ridge. Sori 2-4 per pinnule, basal to medial on pinnae, at maturity confluent, linear-elliptic, 1-2.5 mm; indusia grayish green, linear-elliptic, membranous, entire, opening toward costa or costules. Spores with lophate (cristate) perispore, average exospore length 32-34 µm. Plants sexual, allotetraploid: 2n = 144.

  • Provided by: [B].Flora of China @
    • Source: [
    • 1
    • ]. 

     Information From

    World Flora Online Data. 2021.
    • A CC0 1.0 Universal (CC0 1.0).
    Flora of China @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • B Missouri Botanical Garden
    World Flora Online Consortium
    World Flora Online Data. 2017.
    • C CC0 1.0 Universal (CC0 1.0).