516 FLORA OF TEXAS. 



Fruit a globular cone, with peltate scales. Leaves spreading on slender deciduous 

 branchlets Taxodium. 



Fruit an oblong cone, with imbricated oblong scales. Leaves minute, imbricated on 

 the flattened branches, persistent Thuja. 



Sub-order III. Taxineae. Fertile flower solitary, 

 without a carpellary scale. Fruit a drupe. Buds scaly. 



Drupe surrounded by a fleshy cup. Albumen Jumwgeneous Taxus. 



naked. Albumen ruminated Torreta. 



PINUS, Tourn. Pine. 



Floivers monoecious ; sterile aments spiked or clustered ; 

 stamens numerous on the axis, with very short filaments; 

 anthers with a scale-like connective, 2-celled, opening 

 lengthwise; /er/fi7e aments terminal, single or clustoi-ed; 

 cariyellary scales in the axils of deciduous bracts, each 

 bearing two collateral inverted ovules at the base, indurated 

 in fruit, and forming a cone, the apex commonly thickened, 

 angular, and spiny ; seeds nut-like, lodged in an excavation 

 at the base of the scale, and furnished with a thin decidu- 

 ous wing ; embryo in the axis of oily albumen ; cotyledons 

 3-12, linear. — Trees; leaves evergreen, needle-shaped, 2-5 

 in a cluster, their bases inclosed in a thin scarious sheath. 



* Leaves two in each sheath. 



P. MiTis, Michx. {Short-leaved Pine.) Leaves from a 

 long sheath, crowded, very slender, concave on the inner 

 face, dark green ; cones small, mostly solitary, oval or 

 conical-oblong, the thin scales flattened at the apex, and 

 armed with a ^veak incurved spine. (P. variabilis, Pursh.) 

 Light clayey soil. — A large tree, with rough bark, and fine- 

 grained valuable wood; leaves 3-5' long, sometimes three 

 in a sheath ; cones light-brown, about IJ' long, opening at 

 maturity ; ivings of the seed reddish. 



** Leaves three in each sheath, 



P. T^DA, L. {Loblolly or Old-field Pine.) Branches 



