LXVJI. JUGLANDA V CE^E: PTEROCA X UYA. 

 GENUS III. 



743 



PTEROCAMIYA Kunth. 



THE PTIiROCARYA. 



? Polyandria. 



Lin. Syst. Monce'cia 



Identification. Kunth in An. Sciences Naturelles, 2. p. 346. ; Lindley Nat. Syst. of Bot., p. 180. 

 Synonyme. Juglans sp. Lin. 



Derivation. Ptc.ron, awing; karua, the common walnut. The fruit has wings ; and, except in 

 these, resembles that of the walnut. 



Gen. Char., $c. Flowers unisexual, monoecious. Male flowers in spikes. 

 Stamens in a flower many. Female flowers in long pendulous spikes, and 

 distant, sessile, and without bracteas. Calyx connate with the ovary. 

 Ovary and part of the calyx flagon-shaped, bearing two wings above the 

 base ; their direction transverse and oblique; cell 1 ; ovule 1, erect. Style 

 1, very short. Stigmas 2, large, spreading, revolute. Fruit sub-drupa- 

 ceous, angled ; having two wings, as the ovary*; much tapered to the tip, not 

 opening ; containing a bony nut, which has 4 cells in its lower part, whose 

 partitions do not extend to the top. (G. Don.) 



Leaves compound, alternate, exstipulate, deciduous ; leaflets about 17, 

 sessile, unequal at the base, not dotted, serrate. Fruit small. Decaying 

 leaves brown. A tree, deciduous ; native of the eastern part of Caucasus; 

 propagated by layers, but the plant is somewhat tender. 



t 1. P. CAUCA'SICA Kunth. The Caucasian Pterocarya. 



Identification. Kunth in Annal. des Scien. Nat., 2. p. 346. 



Synuni/mes. Juglans Pterocarya Michx. Fl. Bor. Amer. 2. p. 192., Mey. Verx. Pflanx. Cauc. p 134 



#hus obscurum Bieb. Fl. Taur. Cauc. No. GOG.; J. /raxinifblia Lamond MS., N. Du Ham A' 



p. 182. ; Fraxinus Icevigata Hort. Par. 

 Engravings. Our fig. 1431. from a seedling plant ; the plate of this tree in Arb. Brit., 1st edit vol 



vii. ; said fig. 1432. from a plant in the Horticultural Society's Garden. 



/t\ 



Spec. Char., $c. Leaflets, in a leaf, about 19; ovate-oblong, acuminate, 

 argutely serrate, glabrous ; each with the lower or hinder side of its base 

 attached to the petiole. (Lamarck.) A low deciduous tree. Mount Caucasus, 

 in moist woods. Height 20ft. to 40 ft. Introduced in ? 1800. Flowers 

 greenish ; May. 



3 K 4 



