FIG 2 - uploaded by George Yatskievych
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Selected details of Cheilanthes viridis morphology. A. Portion of fertile lamina showing lobed terminal segments, crenulate segment margins, inconspicuous pseudoindusia, and easily visible venation. B. Portion of sulcate adaxial costa and costule. C. Base of plant with horizontal rhizome, fiddlehead, and stipe bases. D. Laminar portions of fertile fronds showing abaxial and adaxial sides. A-C, Bastrop County, Texas. D, Harris County, Texas.
Source publication
Cheilanthes viridis (Pteridaceae), green cliffbrake, is reported as new to the floras of Texas and Louisiana. This African native has long been cultivated as an ornamental fern and likely escaped to become naturalized in eastern Texas and adjacent Louisiana. The expanding distribution of the taxon in Florida, Georgia, Louisiana, South Carolina, and...
Contexts in source publication
Context 1
... intermediates for all of the characters said to separate them (Burrows, 1990;Verdcourt, 2002;Crouch et al., 2011). The nominate infrataxon, var. viridis, is morphologically variable, but defined by the following character trends: laminae generally 2-3-pinnate (occasionally more divided in its native range), stipes relatively shallowly sulcate (Fig. 2B) and glabrescent distally; basal pinnae tending to be more developed basiscopically than acroscopically; and branch points of costae and costules bearing inconspicuous, gland-tipped trichomes that sometimes extend slightly onto the pinnule bases. Compared with var. viridis, plants attributed to var. macrophylla (Kunze) Schelpe & N.C. ...
Context 2
... intermediates for all of the characters said to separate them (Burrows, 1990;Verdcourt, 2002;Crouch et al., 2011). The nominate infrataxon, var. viridis, is morphologically variable, but defined by the following character trends: laminae generally 2-3-pinnate (occasionally more divided in its native range), stipes relatively shallowly sulcate (Fig. 2B) and glabrescent distally; basal pinnae tending to be more developed basiscopically than acroscopically; and branch points of costae and costules bearing inconspicuous, gland-tipped trichomes that sometimes extend slightly onto the pinnule bases. Compared with var. viridis, plants attributed to var. macrophylla (Kunze) Schelpe & N.C. ...
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Citations
... Distribution: Cheilanthes viridis is native and widely distributed from South Africa through East Africa toward the Arabian Peninsula and some adjacent islands (Miller 1996;Roux 2009). It also distributes in Brazil with uncertain origin ) and naturalized in several countries such as USA (Yatskievych 2020 Habitat: In Taiwan, Cheilanthes viridis is found growing on a semi-shaded roadside stone pitching concrete wall accompanied with Pilea microphylla (L.) Liebm. and Lemmaphyllum microphyllum C. Presl in the urban area of Tucheng, New Taipei City. ...
... The systematics within Cheilanthoideae remains unsettled, and so as the generic placement of Cheilanthes viridis Yatskievych 2020). Here we tentatively follow the latest study (Yatskievych 2020) which placed it under Cheilanthes, though this species is genetically distantly related to the other Taiwanese Cheilanthoideae (Schuettpelz et al. 2007;Zhang et al. 2007). ...
... The systematics within Cheilanthoideae remains unsettled, and so as the generic placement of Cheilanthes viridis Yatskievych 2020). Here we tentatively follow the latest study (Yatskievych 2020) which placed it under Cheilanthes, though this species is genetically distantly related to the other Taiwanese Cheilanthoideae (Schuettpelz et al. 2007;Zhang et al. 2007). Several infraspecific taxa are recognized in its native areas (Crouch et al. 2011), and the naturalized population in Taiwan belongs to var. ...
