44 



Pteridaceae 



a linear tail at the tip, rounded to abruptly acute at base, 

 minutely toothed, glabrous on both sides or very thinly pubes- 

 cent along the costas and veins beneath, the lower pinnae often 

 with 1 or 2 smaller divisions on each side near base, petiolate; 

 veins closely parallel, once or twice forked, free, reaching the 

 base of the marginal tooth; sori along the lower 2/3-4/5 of 

 the dorsal part of the veins, yellow. ^Woods in low moun- 

 tains; Hokkaido, Honshu, Shikoku, Kyushu; common. 



Sakhalin, s. Kuriles, Korea, Manchuria, China to India. The 

 typical phase occurs in India to Malaysia and Hawaii. 



2. Coniogramme japonica (Thunb.) Diels. Hemioni- 

 tis japonica Thunh.; Gymnogramme japonica (Thunb.) Desv.; 



Dictyogramme japonica (Thunb.) Fee; Notogramme japonica 

 (Thunb.) Presl Iwagane-s6. Closely allied to the pre- 



ceding; pinnae usually more or less gradually acuminate; veins 

 obliquely spreading, anastomosing in lower half, not reaching 



the teeth of the pinnae. Woods in low mountains; Honshu, 



Shikoku, Kyushu; rather common. Ryukyus (Amami- 



oshima), Formosa, China, and Korea. 



Var. fauriei (Hieron.) Tagawa. C. fauriei Hieron. Inu- 



iwAGANE-so. The veins barely anastomosing along the costas 



in lower half of the pinnae. ^Honshu, Kyushu; rare. 



Korea. 



11. CHEILANTHES Sw. Ebigara-shida Zoku 



Terrestrial; rhizomes short-creeping or erect, scaly; fronds small, usually tufted, pinnate to decompound, hairy or scaly, rarely 

 smooth; veins free; sori marginal, on the tips of the veins, often in contact but not laterally confluent; indusia formed from the 



more or less modified reflexed margin of the segments, often obsolete or wanting. About 180 species, in tropical and warm 



temperate regions. 



1. Cheilanthes chusana Hook. C. mysurensis sensu 



auct. pro parte, non Wall. ^Ebigara-shida. Rhizomes 



short, ascending, densely covered with the persistent bases of 

 old stipes and with lustrous dark brown linear scales about 3 

 mm. long; fronds tufted; stipes 1.5-10 cm. long, purple-brown, 

 lustrous, terete, 2-striate on the upper side, prominently scaly; 

 scales on stipes and rachis rather unequal, broadly linear, 1-2 

 mm. long, spreading, deep brown, entire; blades oblong-ovate 

 in the smaller ones, nearly linear in the larger ones, 7-30 cm. 

 long, 18-30 mm. wide, acute, scarcely narrowed at base, bipin- 

 natiparted, the rachis purple-brown, with a prominently scaly 



raised line on the margins above; pinnae 7-15 on each side, 

 herbaceous, opposite or nearly so, triangular- to oblong-ovate, 

 1-2.5 cm. long, obtuse, sessile, glabrous, spreading to ascend- 

 ing, the costa impressed on upper side, raised and purple- 

 brown beneath; pinnules oblong or oblong-ovate, 2-7 mm. 

 long, obtuse to rounded, crenately few-toothed; veins and vein- 

 lets indistinct on both sides; sori marginal, on the ends of the 



veinlets; indusia apparently soon confluent, rusty-brown. 



Honshu (Chugoku Distr.), Shikoku, Kyushu. s. Korea and 



China. 



12, ALEURITOPTERIS Fee Hime-urajiro Zoku 



Terrestrial small ferns with short, ascending, scaly rhizomes; fronds tufted; stipes purple- to black-brown, polished, naked or 

 scaly; blades deltoid to ovate, bipinnatiparted with large bipinnatifid basal pinnae, more or less densely white- or yellow-farinose 



beneath; veins free; sori marginal, on the rips of the veins, covered by the reflexed margins of the segments. About 15 



species, Africa to Malaysia, China, Japan, and Mexico. 



lA. Blades ternately parted, shorter than the stipes, 2—8 cm. long, as wide or slightly wider; pinnae not or only slightly shorter than the 



blade, decurrent on the rachis on anterior side I. A. argentea 



IB. Blades bipuinate to 2- or 3-pinnately parted, manifestly longer than wide; lowest pinnae much shorter than the blade, sessile, not de- 

 current. 



2A. Stipes 7-20 cm. long, longer than the blades; blades triangular-ovate; scales on stipe obsoletely striate 2. A. \rameri 



2B. Stipes 3-15 cm. long, usually shorter than the blades; blades ovate to oblong-ovate; scales very finely striate. 



3. A. \uhnii var. brandtii 



1. Aleuritopteris argentea (Gmel.) Fee Pteris argentea 

 Gmel.; Cheilanthes argentea (Gmel.) Kunze Hime-ura- 

 jiro. Rhizomes short, clothed with old stipes and dark 

 brown lustrous scales about 2 mm. long; fronds evergreen, 

 tufted; stipes lustrous, fragile, terete, 10-25 cm. long, 1-1.5 

 mm. across, sparsely scaly toward the base; blades 5-angled, 

 firmly herbaceous, 2-8 cm. long, shorter than the stipes, as 

 wide to slightly wider than long, ternately parted, glabrous and 

 gray-green above, white- to pale yellow-farinose beneath; pin- 

 nae slightly shorter than the blade, obtuse, decurrent on the 

 rachis on the anterior side, pinnatiparted, the 2 lowest posterior 

 pinnae elongate, sometimes pinnatilobed, the terminal segment 

 decurrent on the rachis; sori marginal; false indusia (reflexed 



margin of the pinnae) hyaline, entire or crenate-undulate. 



Dry rocks; Honshu (Rikuchu, Kanto Distr., Kii), Shikoku, 



Kyushu. Korea, Manchuria, Siberia, China, Formosa to 



Malaysia, and India. 



2. Aleuritopteris krameri (Fr. & Sav.) Ching. Cheilan- 

 thes \rameri Fr. & Sav. Iwa-urajiro. Rhizomes short, 



densely covered with stubs of old stipes and dark brown lus- 

 trous linear scales 3-4 mm. long; fronds glabrous, fragile, 

 tufted; stipes 7-20 cm. long, longer than the blades, sparsely 

 scaly at base; scales obsoletely striate, terete, lustrous, dark 

 purple-brown; blades thickly herbaceous, triangular-ovate, 4-15 

 cm. long, acuminate, bipinnatiparted in the lower portion, 

 pinnatiparted in the upper portion, the rachis sulcate on upper 

 side; pinnae spreading, obtuse, sessile, gray-green and glabrous 

 on upper side, white-farinose beneath, the lowest ones longer 

 on the posterior side, the upper pinnae decurrent on the rachis; 

 pinnules lobed to parted, crenate, rounded at apex; veins obso- 

 lete; sori marginal; false indusia confluent and lobed. 



Rocks; Honshu (Kanto Distr.); rare. 



3. Aleuritopteris kuhnii (Milde) Ching var. brandtii 

 (Fr. & Sav.) Tagawa. Cheilanthes brandtii Fr. & Sav.; C. 



