153 



than the lateral ones : stamens 6—8 ; fruit ellipsoid, subacute at 

 both ends, sUky-pubescent, 



Silhet; 



GENUS. XII. APOEOSA. 



Dicecia Fentandria. Sex: Syat: 



&EM-. Chae. Segments of the male calyx imbricated : petals 

 and disc none : stamens inserted round the rudimentary ovary ; 

 anthers 2-cleft, cells cohering lengthways : cells of the ovary 2- 

 ovuled : embryo straight in copious albumen : radicle thin. — 

 Trees : leaves alternate, petioled, bistipulate, usually lanceolate- 

 ovate, entire or repand-dentate : petioles swollen at the base and 

 apex, sometimes distinctly biglandulose at the apex- flowers 

 dioecious, arranged in densely imbricato-bracteated spikes, very 

 small : bracts broadly ovate, 3 — l-flowered, increased by 2 

 bracteoles : male calyx 3— 6-parted, female 5-parted, segments 

 shorter and more obtuse than the males : stamens 2 — 5, usually 

 2 : filaments free : anthers 2-cleft, subglobose, opening length- 

 ways inwards, usually at length exserted: rudimentary ovary 

 cylindric, minute or even almost obsolete : ovary 2 — 3-celled : 

 stigmas 3^2, 2-lobed or cleft, strongly lacinulately papillose: 

 fruit by abortion usually 1-seeded. 



(1) A. DioiCA, {Muller.) 



Ident. Dec. prod. XV. s. 2. p. 472. 



Syn. Alnus dioica, Botxl. flor. Ind. III. p. 580. — Aporosa 

 Eoxburghii, Baill. Etud. p. 645. 



Spec. Chae. Tree : leaves oblong- or lanceolate-elliptic, sub- 

 acute at the base, acuminate at the apex, usually entire : male 

 spikes 2 — 3-aggregate, females numerous, densely pubescent : 

 male bracts densely imbricated, concave, hispidly ciliated, reaching 

 the top of the flowers, females ovate : female flowers sessile : seg- 

 ments of the male calyx ovate-lanceolate, of the female ovate : 

 ovary oblong-ovoid, pubescent : stigmas 2, minute, 2-lobed : fruit 

 acutely subellipsoid. 



Silhet. Assam. 



(2) A. LiNDLETAKA. {Midler.)] 



Ident. Dec. 1. c. p. 473. 



Spec. Char. Female spikes subsolitary : male bracts broader 

 than long, subfimbriate-denticulate at the margin, females broad 

 ovate : female flowers shortly pedicelled : bracteoles ciliolate at 

 the margin : segments of male calyx obovate : anthers 2—3 : 

 ovary ovoid, acuminate, silky-pubescent : stigmas deeply 2-partite, 

 strongly long-papiUose : fruit subglobose, very shortly conical- 

 sharpened. 



