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164 
THE GENERA AND SPECIES OF CULTIVATED FERNS. 
Fig. 33. 
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branching, four times pinnate, one and a half to two feet high ; pinnules small, membranous, rhomboidal, obtuse, 
inciso-lobate, sterile, serrate, pale green; raehis pubescent. Sori small ; indusium reniform. Stipes scabrous, 
lateral, adherent to a slender creeping rhizome. 
J71HEILANTHES, Swartz. — Named from cheilos, a lip, and anthos, a flower; in allusion to the lip-shaped indu- 
ly siuni which covers the fructification. 
Sori round, marginal, solitary, or contiguous, often becoming confluent. Indusium sometimes reniform, rarely 
oblong, and including more than one sorus. Veins forked; venules direct, their apices free, and sporangiferous. 
Fronds from a few inches to two or three feet long, glabrous, pilose, glandulose, or squamose ; segments of the 
pinnules sometimes very small, concave, and orbicular. — With one or two exceptions, the species arranged under 
this genus scarcely attain more than a foot in height ; they are all of very delicate texture, and are mostly natives 
of elevated regions in tropical or extra-tropical countries. They are best cultivated in an intermediate house, and 
should be potted in sandy peat soil, well drained, and watered very sparingly 
over the fronds ; during winter they should be kept rather dry. On account of 
their proximity to other genera in this tribe, they are often difficult to determine 
unless in a living state. In the small convex segments of the pinnules with 
only a few spore-cases, they are analogous to Nothochla?na, but from that genus 
they are obviously distinguished by having an indusium. From Adiantum they 
are distinguished by the position of the sori, which is here produced on the 
apex of the venules in the axis of the indusium, that of Adiantum being on the 
indusium. Fig. 33 represents a small portion of a frond of C. viseosa (nat. size). 
1. C. mitt'opterisj Swartz. — A neat dwarf evergreen greenhouse Fern, from 
Quito. Fronds slender, linear, four to six inches long, and covered throughout 
"with glandulose hairs, pinnate ; pinna? numerous, small, petiolate light green, 
sub-rotund, concave, and sub-crenate. Raehis and stipes brown, terminal, ad- 
herent to a creeping rhizome. Sori consisting of a few spore-cases on each seg- 
ment, which ultimately become confluent. 
2. C. odora, Swartz. — A dwarf evergreen greenhouse Fern, from the South 
of Europe. Fronds glabrous, bipinnate, about six inches high, of a light green ; 
pinna? oblong-obtuse, sinuate-pinnatifid, the lower ones distant and pinnatifid. 
Raehis and stipes scattered over with narrow scales. Sori confluent. Fronds 
terminal, adherent to a somewhat tufted rhizome. 
3. C. mierophylla, Swartz. — An ornamental evergreen stove Fern, from the 
West Indies. Fronds slender, linear acuminate, one to one and a half foot long, 
pale green, slightly pubescent, bipinnate ; pinnules oblong, rather obtuse ; segments roundish-ovate, sterile dentate. 
Raehis amd stipes ebeneous, terminal, adherent to a short creeping rhizome. Sori continuous, confluent ; indu- 
sium very small. 
4. C. micromera, Link. — An evergreen greenhouse species, from Mexico. Fronds lanceolate-acuminate, 
bipinnate, about a foot long ; pinna? linear acuminate, rather obtuse ; segments obovate, deep green, sterile 
crenate. Stipes raehis and midrib of pinna? ebeneous, and covered with narrow brown scales ; fertile segments 
concave. Sori continuous, confluent ; indusium very small. Fronds nearly all fertile, terminal, adherent to a 
short creeping rhizome. 
5. C. riifesccns, Link. A very neat, evergreen, greenhouse Fern, from Mexico. Fronds glabrous, somewhat 
triangular, from six to ten inches high, delicate green, tripinnate ; pinnules oblong, with oblong-ovate rather 
obtuse segments decurrent at the base. Stipes and raehis black. Rhizome somewhat creeping. This plant is 
at present very scarce in cultivation; although, in 1840, it was growing freely in the Botanic Garden, 
Birmingham. 
6. C. hirta, Swartz. A very delicate evergreen greenhouse species, from the Cape of Good Hope. Fronds 
linear, lanceolate, pale green, sub-tripinnate one foot long, and covered throughout with glandulose hairs ; pin- 
nules small, oblong-obtuse, pinnatifid ; segments crenate. Raehis and stipes brown, terminal, adherent to a 
rather erect rhizome. Sori distinct, subsequently confluent, on each segment of the fertile frond. 
7. C. spectabilis, Kaulfuss : (C. brasiliensis, Raddi.) — A straggling growing evergreen stove Fern, from Brazil. 
Fronds slender, glabrous, tripinnate, three to four feet long, light green ; pinnee linear-acuminate ; pinnules 
oblong-linear ; segments oblong-obtuse, slightly crenate, adnate, and decurrent throughout the whole frond, 
which is terminal, adherent to an erect fasciculate rhizome. Sori distinct, subsequently confluent. 
8. C. tmuifolia, Swartz. — A very tender deciduous greenhouse Fern, from the East Indies and New Holland. 
Fronds somewhat ovate, tripinnate, one foot long, light green; pinnules linear- acuminate ; segments oblong- 
ovate, deflexed. Raehis, stipes, and midrib of pinna? brown, and scattered over with narrow scales. Fronds 
terminal, adherent to a creeping rhizome. Sori round, subsequently confluent ; indusium very small. 
9. C. tenuis, Presl. — An elegant evergreen stove species, from Mexico. Fronds ovate-lanceolate, tripinnate, 
one foot long, woolly ; pinnules oblong ; segments small, roundish ovate, cuneate at the base, crenate reflexed 
and concave. Sori linear consisting of a single row of spore-cases partly concealed in the axis of the broadly 
reflexed margin of each segment ; indusium linear, continuous. Fronds terminal, adherent to a creeping rhizome. 
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