CiTEUs.] RUTACE^. 139- 



L. crenulata, Eoxh. Cor. PI. i, 60, i. 86 ; Fl. Ind. ii, 381. L. acidia- - 



sima, Aud. plur. (not of Linn.) ; W. Sf A. Prod. 92 ; Boyle III. 129 • D 

 4- G. Bomh. Fl. 29 ; Brand. For. Fl. 47; F. B. I. i, 507 ; Watt E. B. Vera. 

 Beli. 



A glabrous shrub or small tree, armed with straight spines. Baric ash- 

 coloured, rugose. Branches rigid, flexuous. ieayesjalternate, impari- 

 pinnate ; 'petiole and rachis jointed^ the former narrowly the latter very - 

 broadly winged. Leaflets 5-9, 1-2 in. long, sessile, opposite, trapezoid- 

 ovate, obtTise and notched at the tip, crenulate, cuneateatthe base ; joints 

 of Irachis ob ovate-oblong, crenulate. Racemes subumbellate, pubescent, 

 often leafy. Floioprs 4-merous, | in. across, white, fragrant. Petals ellip- 

 tic or oblong, more than twice the length of the calyx. Bisk annular or 

 columnar. Ovary 4-celled; style short, thick; ovules 1 in each cell, 

 pendulous. Berry globose, i in. in diam., 1-4 seeded, black, pulp very acid. 



Dehra Dun and Siwalik range. Disteib. : W. Himalaya up to 4,000 ft., 

 Bengal, Assam. W. and S. India ; also in Yunan. Flowers in April and 

 May, and the fruit ripens during the cold weather Various parts of the 

 plant are used medicinally. The handsome, yellow, hard and close- 

 grained wood has been recommended for the lathe. In Java the fruit is 

 used instead of soap. 



Dr. Trimen has pointed out in Journ. Bot. xxvii, 162, that Linnseus' 

 L. acidissima is not this plant but Feronia elephantum, and thatjhis name 

 cannot be retained for either ; also that as it is the species on which Limo- 

 nia. L. was founded, that genus, strictly speaking, falls to the ground; 

 moreover, as the present plant forms the genus Hesperethusa, Ecem.,tliat . 

 name ought perhaps to be maintained in its stead. 



8. CITRUS, Linn. ; Fl. Brit. Ind. i. 514. 



Evergreen shrubs or trees, usually spiuous. Leaves alternate, 

 l-foliolate, coriaceous, more or less serrate, persistent ; petiole often 

 winged. Floivers axillary, solitary fascicled or in small cymes, white 

 or pinkish, sweet-scented. Calyx cupular or urceolate, 3-5-fid. Petals 

 4-8, linear-obloog, thick, imbricate. Stamens 15-60, inserted round 

 a large cupular or annular disk ; filaments variously connate, 

 compressed at the base ; anthers oblong. Ovary many -celled ; style 

 stout, deciduous ; stigma capitate ; ovules 4-8, 2'Seriate in each cell. 

 Berry large, oblong: or globose, fleshy, many-celled, septa membra- 

 nous, cells few-seeded and filled with horizontal fusifoim cells deve- 

 loped from the endocarp and distended with juice. Seeds horizontal 

 or pendulous, containing sometimes two or more embryos. — Species 

 about 7, two of which are Australian, and the remainder probably 

 all originated in Tropical Asia. 



Of the 4 species described in the Flora of British India, three will be 

 Bpecially mentioned here as representing all the different kinds of oranges, 



