Ctenitis strigilosa (Davenp.) Copel.

  • Authority

    Mickel, John T. & Smith, Alan R. 2004. The pteridophytes of Mexico. Mem. New York Bot. Gard. 88: 1-1054.

  • Family

    Dryopteridaceae

  • Scientific Name

    Ctenitis strigilosa (Davenp.) Copel.

  • Description

    Species Description - Rhizomes suberect to erect, caudices ca. 1.5 cm diam.; fronds 25–40 cm long; stipes brownish, 1/3–1/2 the frond length, 7–20 cm x 1–1.5 mm, bases with dark, spreading, lustrous, hair-like scales 5–9 x 0.2–1 mm, scales slightly inrolled at the margins, underlain by dense glandular hairs 0.1–0.2 mm long; blades chartaceous, green, bipinnate at the bases, deeply pinnate-pinnatisect distally, ovate, to ca. 20 x 10 cm; rachises abaxially with somewhat inrolled, dark brown scales 3–5 mm long, underlain with dense jointed hairs 0.1–0.3 mm long; pinnae to ca. 10–12 pairs, sessile or stalked to ca. 3 mm, to ca. 5 x 2 cm, the pinnatisect ones incised to within 1 mm of costae; segments entire or the larger ones minutely toothed, especially near their tips, which are sometimes apiculate, margins with jointed hairs to 0.3 mm; veins simple, reaching the margins above the sinuses; indument on costae abaxially of inrolled scales 2–3 mm long, these underlain by dense glandular and jointed hairs 0.1–0.3 mm; laminae between veins on both sides with dense to scattered glandular hairs mostly ca. 0.1 mm long; sori inframedial to subcostular throughout segments, with tan, persistent, glandular indusia 0.3–0.5 mm diam.

  • Discussion

    Aspidium strigilosum Davenp., Bot. Gaz. 256. 1896. Dryopteris strigilosa (Davenp.) C. Chr., Index Filic. 295. 1905. Type. Mexico. Veracruz: Barranca of Metlac, Pringle 6077 (GH!; isotypes MEXU!, NY!, UC!, US!).

    Dryopteris strigilosa (Davenp.) C. Chr. var. cookii Maxon ex C. Chr., Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd., ser. 7, 10: 105. 1913. Type. Guatemala. Alta Verapaz: Finca Sepacuite, Cook & Griggs 507 (US!).

    Ctenitis strigilosa is distinguished by the pinnate-pinnatifid to usually barely bipinnate blades, numerous dark hair-like scales on the stipes and rachises, small indusia, and densely glandular rachises, costae, veins, and laminae (both sides of blades). It is closely related to C. bullata, which see.

  • Distribution

    Terrestrial or on calcareous cliffs in wet pine-oak forests, lower montane rain forests; 550–1600 m. Mexico; Guat.

    Mexico North America| Guatemala Central America|