. t 



) 



1 



1 



I 



Atalantia^ xxviii. rutace^. 



371 



veiy obtuse, 1^ to 2^ in. long, coriaceous, on petioles of 1 to 3 lines. 

 -Kacemes axillary, sometimes 2 together, i to 1 in. long, or terminal and 

 ^ slightly branched. Pedicels very short. Calyx minute, 3- or rarely 4-lobed. 



Petals and stanaens not seen. Berries globidar, either 1 -seeded and 3 or 4 

 lines diameter, or 2-seedcd and larger. 



+ ^" ^'^^^^^^^a- Carccuino; Bay,N.W. coast, XCz^«?i%y^ff we; islandsof the Gulf ofCarpen- 

 n^ ^''y^^ (^^•^- ^- ^^')' 't'he ilowers are wanting, to determine absolutclj the affinities 

 of this species. R. Brown's specimens are however in very good fruit. A, Cunuingliam's 

 are m leaf only, with some remains of the inflorescence and calyx. 



29. CITRUS, Linn, 



_ Calyx 3- to S-lobed. Petals 4 to 8, thiek, imbricate in the bud. Stamens 

 indefinite, usnally nnmerous, fdaments flattened at the base and varionsly 

 connate, anthers oblong. Disk large, cupuhir or annular. Ovary of 6 or 

 ttiore cells ; style deciduous, with a capitate lobed stigma ; ovules 4 to 8 in 

 each cell, in 3 rows. Eerry globular or oblong, with a thickened rind, several- 

 celled, with thin dissepiments, the cells more or less filled with transverse 

 pulpy cellules. Seeds with a coriaceous testa; albumen none; embryos often 

 more than one; cotyledons fleshy, plano-convex. — Trees or shinibs, often 

 ^med with axillaiy spines. Leaves 1-foliolate, the petiole often winged. 

 ^ lowers white, axillary, solitaiy clustered or shortly panicuhite. 



1 he really wild species arc few, chiefly from tropical Asia, but long culture in most hot 

 countries has produced numerous permanent varieties, Tlie Australian ones difl'er from the 

 others iu the short petiole not at all winged. 



iVuit globular. (Stamens about 10?) \. C. mstralls. 



-t* ruit oblong. Stamens above 20 , . %. C. australasica. 



w 



1- C. australis, Tlanch. in IIorL Donat. 18 {partly). A tree of 30 ft. 

 or more, quite glabrous, with axillary straight thorns of about i in. Leaves 

 ovate, obovate, or almost rhouiboidal, 1 to 2 in. Jong, obtuse or emarginate, 

 the petiole not exceeding 3 lines, and not winged. Flowers wanting in our 

 specinaens, but according to A, Cunningham, he found a single one wluch had 

 10 free stamens. Pruit in the specimens which I have seen globidar, from 1 

 *^ 1-2 in. diameter, with a hard rind; cells 6 to 8, more or less pulpy, with 

 usually 3 or 4 seeds in each. — Limonia aiistralis, A. Cunn. in Sweet. Cat. 



Queensland. Brisbane river, A. Cunni7igham, Fraser ; Moreton IS^y , LeichhardL 

 v>uniiingham's specimens of this the " Native Orange" are in leaf with fruits attaehed ; 

 l^eichhardt's are ouly loose fruits. All our specnneus in flower have much narrower leaves, 

 ®fld I therefore refer them to the following species, to \vhich also probably belongs the poly- 

 ^arous flowering specimen described by Planchon. 



, 2. C. australasica, T. MnelL Iragm, i. 26. A rigid sliruh (accord- 

 ing to A. Cunningham), quite glabrous, with axillary straight slender spines 

 ^f 2 in. or less. Leaves from obovate-oblon^^ to oblon^-curu^^te or lanceolate, 



^ery obtuse and emarginate, 1 to \\ or -...^.^ 



petiole usually very short, and not winged. Tluwers solitary or rarely 2 

 together, on very short petlicels. Sepals 5, small, spreading, eoneave, minutely 

 cdiate. Petals oblong, nearly 4 lines long. Stamens 20 to 25, free. Ovary 

 wi the flowers examined 6-celled. Style very short, with a thickened, obtuse, 

 furrowed stigma. Ovules 4 in each cell. Fruit oblong, almost cylindrical, 



2 B 2 



