ADIANTUM. 



253 



(twice divided to the midrib), the upper ones pinnate (only once divided to 

 the midrib) ; the pinnules (leafits) are of an oblong- trapeziform (oblong and with 

 the four sides unequal) shape, and are cut on the upper edge into shallow 

 lobes. The stalks on which the fronds are borne are slender and of a some- 

 what rough nature, similar in that respect to those of A. diaphanum 

 (A. setulosum of commerce). Indeed, the plant resembles a much-enlarged 

 edition of that lovely species, from which it is supposed to have originated, 

 and the peculiar way in which it reproduces itself from the bulbils formed 

 on its fibrous roots seems to point to its origin. It has, until now, proved 

 quite barren. See Plate. — Nicholson, Dictionary of Gardening, iv., p. 484. 



A. Bournei — Bour'-ne-i (Bourne's). A form of A. cuneatum. 



A. brasiliense — bras-il-i-en'-se (Brazilian). A form of A. curvatum. 



A. bulbiferum — bul-bif-er-um (bulb-bearing). A variety of A. Capillus- 

 Veneris. 



A. Burnii — Bur'-ni-i (Burn's), Moore. 



A very decorative form, of garden origin, requiring stove temperature. 

 Its evergreen, smooth fronds, broadly oval (broader at the base than at the 

 extremity) and acuminate (terminating in a long, tapering point), are three 

 and frequently four times divided to the midrib. They are furnished with 

 pinnae (leaflets) of the same shape as the foliaged part of the frond itself; 

 the lower ones are provided with a long stalk, and the upper ones are almost 

 sessile (stalkless). The pinnules (leafits), which are very numerous, are 

 stipitate (supported on stalks) below : the basal one is 2in. to 2jin. long, 

 narrowly ovate and compound (further subdivided) ; the upper ones are 

 narrower still, being less divided at the base. The sori (spore masses), which 

 in this garden hybrid are very numerous, are of a roundish kidney-shape, 

 and situated at the base of a notch at the apex of the lobes. — Nicholson, 

 Dictionary of Gardening, iv., p. 484. 



A. calcareum — cal-ca'-re-um (limey), Gardner. 



This stove species, native of the province of Goyaz, Brazil, belongs to 

 the " Radicantes " Group, of which it is one of the smallest growers. Its 

 gracefully-pendulous fronds, simply pinnate (only once divided to the midrib), 



