FIGURE 26 in A taxonomic monograph of the fern genus Ctenitis (Dryopteridaceae) in South America

FIGURE 26. Some morphological characters of Ctenitis from South America. A–B: Ctenitis submarginalis var. submarginalis (Verdi 1843, BHCB). A: abaxial surface of a portion of rachis and two basal segments of a medial pinna. B: abaxial costa scale. C–D: C. submarginalis var. tenuifolia (Pietrobom 5015, BHCB). C: abaxial surface of a portion of medial pinna, showing indument. D: abaxial costa scale. Scale bars in A = 1 cm; B–D: = 1 mm.