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FOC | Family List | FOC Vol. 2-3 | Thelypteridaceae | Leptogramma

1. Leptogramma tottoides H. Itô, Bot. Mag. (Tokyo). 49: 434. 1935.

小叶茯蕨 xiao ye fu jue

Cyclosorus tottoides (H. Itô) C. M. Kuo; Leptogramma caudata Ching; L. totta (Schlechtendahl) J. Smith var. tottoides (H. Itô) H. Itô; Stegnogramma tottoides (H. Itô) K. Iwatsuki; Thelypteris caudata (Ching) C. F. Reed.

Plants 17-32 cm tall. Rhizomes short and erect, including stipe bases with sparse reddish brown broadly lanceolate scales and grayish white acicular hairs. Fronds clustered; stipes 10-17 cm, slender, dark stramineous, throughout with sparse unicellular acicular long hairs; laminae 1-pinnate, hastate-lanceolate, 14-20 × 4-6 cm, bases hastate and broadest, apices acuminate; pinnae 16-20 pairs, subopposite and spreading, subsessile, proximal 2 or 3 pairs free, distal ones ± adnate to rachises, proximal pair largest, spreading, oblong-lanceolate, 2-3 × ca. 1 cm, truncate and symmetrical at bases, pinnatifid to 1/2 distance to costae, obtuse or shortly acute at apices; segments 4-6 pairs, ovate-orbicular, entire; second pair of pinnae abruptly shortened, 1.5-2 cm, of similar shape as proximal pair, middle pairs of pinnae of similar size and shape, bases adnate to rachises but free from each other, distal pinnae slightly shorter than middle ones, bases connected to each other by broad wings, entire or crenate proximally. Veinlets evident, 3 or 4 pairs per segment, simple, proximal pair arising from far above base of costules and acroscopic one reaching sinus or margins of sinus, basiscopic one reaching margin far above sinus. Laminae thinly herbaceous, dark brown when dry, pinnae throughout with acicular hairs adaxially, abaxially including rachises with spreading grayish white acicular fine hairs, veins sparsely puberulent. Sori linear, usually attached on proximal half on proximal pair of veinlets; sporangia each with 3 or 4 setae near top.

● On rocks in forests; 800-2500 m. Fujian, Guizhou, Jiangxi, Taiwan, Zhejiang.


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