Listing 1 - 2 from 2 for white farina abaxially
HEMIONITIDACEAE [First Draft]
... less often soft leathery), green, somewhat hairy or scaly (rarely glabrous, or with white farina abaxially as in Pityrogramma). Veins free, rarely anstomosing, without including free veinlets in ... sides of main vein. 2a. Blade with white farina abaxially..........................................................2. Pityrogramma 2b. Blade without white farina abaxially. 3a. ...
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Sinopteridaceae [First Draft]
... to finely 4-pinnate-pinnatifid, herbaceous to firmly papery, frequently covered with white or yellow farina abaxially. Veins free, occasionally anastomosing (without including free veinlets). Sori marginal at vein ... 3a. Blades usually with white or yellow farina on abaxial surface..............7. Aleuritopteris 3b. Blades usually without white or yellow farina on abaxial surface. ...
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