47 



Stipules none or obsolete ; flowers unknown ; full-grown parts glabrous or nearly so, A. eler/ans.' 



% y. Pinnae in 2-6 pairs; leaflets ovate to oblong, 3-IJ . long, in several 

 pairs. 

 Leaflets sessile. 



Flowers small, calyx minute, oorolla H lin. long, A. odoratissima. 



Flowers rather conspicuous ; calyx 1^ lin. long, corolla 4 lin. long, A. Lehbek. 



Leaflets on short petiolules, A. procera. 



X >^ X Pinnae in a single pair ; leaflets/he only, large, acuminate. 

 All parts glabrous; pods broad, very flat, A. lucida. 



* * Pods eircinately or screw-like twisted or curved, the seeds often imbedded in a spongy 

 pulp. 



X Unarmed. Seeds without pulp or arillus. 

 " Flowers pedicelled, in head-like umbels or racemes, 

 t Branchlets terete. 



Leaves with a single pair of pinnae ; leaflets in 2-3 paixs, smooth and glossy ; seedbearing 



lobes of pod about an inch broad and long, A. Jiringa, 



t t Branchlets sharply angular. 



Leaves with about 12 pairs of pinnae ; leaflets in 4-8 pairs while young (along with all softer 



parts) shortly and softly pubescent, acuminate, A. angulata. 



O O Flowers sessile, in small heads. 



Leaves with a single pair of pinnae ; leaflets in 3 or 2 pairs, almost glabrous, glaucous 

 beneath, A. glomeriflora. 



X X Stipules all or soine of them spiny-indurated. Seeds with a fleshy white, 

 arilhis. 



Flower-heads small, sessile or nearlyso, A. dulcis. 



BOSACE^. 

 Conspectus of genera, 



Ovary superior. Kipe carpels not enclosed in the calyx-tube. (Fruit a dmpe.J 



X Flowers usually not symmetrical. Style basilar. Ovules 2, ascending Radicle inferior. 

 Paeinarium. Petals 5 or 4. Stamens perigynons with filiform filaments and small anthers. Ovary and drupe 2- 

 celled. 



X X Flowers symmetrical. Style nearly terminal. Ovules 2, suspended. Radicle superior. 

 Pkunus. Calyx 5-lobed. Petals 5, usually conspicuous. Drupe straight with a bony putamen. 

 Pygeum. Calyx 5-15-toothed. Petals 5-10, minute, or none. Drupe often transversely oblong, coriaceous. 



Ovary inferior or enclosed in the calyx-tube. Bipe carpels within the persistent calyx-tube and 



forming a compound fruit. 



X Carpels many, l.^vnled. Achens dry, enclosed in the fleshy calyx-tube. 

 BosA. Only genus. 



X X Carpels 1-5, with 2 ovules in each. Fruit an apple with a 2-5-celled putamen, or an 1-5- 

 pyreuous drupe or berry. 

 PiRUS. Calyx-limb deciduous or persistent. O vary and fruit 2-5-celled, the cells separate, the endocarp usually 



cartilaginous. Leaves deciduous. 

 Eeiobotkta. Calyx-limb persistent. Ovary and berry 1-S-celled, the endocarp and septa thin. Leaves ever- 

 green. 



PARIHARIUM. Only species, , P. Sumatranim. 



PRUNUSi Only species, ; P. Javanica, 



PYGEUM. 



Ovary and underside of leaves more or less tawny-villous, P. arboreum. 



Ovary glabrous or sparingly hirsute. 



All parts glabrous ; nerves and veins conspicuous, immersed ; leaves almost ru- 

 gose, P. acuminatum. 



Younger branchlets, petioles and leaves beneath pubescent ; nerves and veins thin, little 

 visible, P. latifolium. 



PIRUS. ^ 



Flowers and fruits on slender 1-2 in. long pedicels, P. Pashia. 



(Flowers and) fruits on very short thick pedicels, ....P. granulosa, 



ERIOBOTRYA, 



X Leaves entire. 



Note : 1 = A. lebbekoides of App. A. 



