TILIACH A. 169 
Beside this genus are placed six others, having flowers similar 
in exterior, and only differing from them in some details in the 
organization of the flower and fruit. Christiana (fig. 178) has a 
fruit of five monospermous follicles,’ but the seeds have an albumen 
and the stamens are fertile. Déplodiscus has the androceum and 
carpels of Brownlowia ; but the latter are united below into a 5- 
celled ovary. Itis the same in Pexface, but its indehiscent and 
monospermous fruit is furnished with from three to five vertical 
wings. In Pytiranthe the ovules are descen- 
dent and the fruit is also provided with longi- 
tudinal wings but little developed; but it is 
capsular and five-valved. Berrya has the an- 
droceum of Christiana, and a capsular fruit 
with three or four valves, but the cells are 
pluriovulate, and each of them bears in the 
fruit a pair of vertical ascending wings. 
Finally, in Carpodiptera the flowers are poly- 
gamous and diœcious ; the ovary cells only 
contain one descendent ovule each; the style 
is dilated into a large stigmatiferous, almost petaloid extremity ; 
and the capsule, generally bivalved, is furnished with four vertical 
wings. All the plants have moreover nearly the same vegetative 
organs as Brownlowia. 
Christiana africana. 

Fra. 178, 
Dehiscent fruit. 
II. LIME SERIES (Fr., Zeus). 
The Limes’ (figs. 176, 179-184) have regular hermaphrodite pen- 
tamerous flowers. If we examine, for example, those of the Common 
Lime,’ we shall see, upon the convex receptacle, five valvate sepals 

1 And in this way they would best represent iii. 15.—Enpu., Gen., n. 5373.— Payer, Or- 
the type of this series; but in their perianth,  ganog., 20, t. 4.—A. Gray, Gen, I. t. 136. 
until now little known, there is said to be an 
inequality in the number of the pieces of the 
calyx and of the corolla. The flower would 
therefore in this respect be less regular. 
2 Tilia T., Inst. 611, t. 381.—L., Gen., n. 
660.—ADans., Fam. des Pl., ii. 382.—J., Gen., 
292.—GæRTN., Fruct., ii. 150, t. 113.—Porr., 
Dict., vii. 676; Suppl., v. 312.—Lamr., Jil. 
t. 467.—Turp., in Dict. Sc. Nat., Atl., t. 147. 
—DC., Prodr., i. 512.—Spacu, Suit, à Buffon, 
—H. By., in Payer Fam. Nat., 274.—B. H., 
Gen., 236, 986, n. 24.—Boca., in Adansonia, 
vii. 34.— Lem. & Done., Tr. Gén., 340, 
3 T. sylvestris Des¥., Cat. Hort, Par. 152 
(ex Spacu, Revis, Til., 3, n. 1).—T. ulmifolia 
Scor.—T. europea borealis WAHLENB.—7. 
microphylla VENT. Diss. Til., t. 1, fig. 1 (ex 
Spacu).—Z. parvifolia Euru., Beitr., v. 159. 
—Kocx., Syn., 145, 
