CONIFER.33. (piNE FAMILY.) 459 



1. C. sphseroidea, Spach. (White Cedar.) Brauelilets compressed, 

 crowded, distichous; leaves ovate, imbricated iu 4 rows, with a roundish gland 

 ou the back; anther cells 2 under each scale; cones small. — Swamps, 

 Florida, and northward. April. — A middle-sized tree with fibrous bark, 

 and light durable wood. Branches spreading. Cones 3"-4"iu diameter, 

 borne on short scaly stalks. 



7. TAXODIUM, Eichard. Cypkess, Bald Cypress. 



Flowers monoecious. Sterile aments small, in a long drooping spiked pan- 

 icle. Scales peltate. Anther cells 2-5, opening lengthwise. Fertile aments 

 single or by pairs, with the peltate scales 2-ovuled. Cone globular. Scales 

 very thick, angular, slender-stalked, separating at maturity. Seeds 3-angled, 

 wingless. Cotyledons 6-9, linear. — Trees, with distichous deciduous leaves. 



1. T. distichum, Ivich. Leaves alternate, opposite, or whorled, on very 

 numerous short and slender deciduous branchlets, linear, acute, 2-ranked or 

 imbricated. (Cupressus disticha, L.) — Ponds and deep swamps in the lower 

 districts. Feb. - March. — A very large tree, with pale smoothish bark, light 

 durable wood, and few fastigiate branches at the summit. Leaves 4" -6" 

 long. Cones f'-l'in diameter. Attached to the roots are hollow conical 

 knobs called Cypress-Kuees. 



8. THUYA, Touru. Arbor-Vit.e. 



Flowers monoecious. Aments small, terminal. Antlier cells 4, with a scale- 

 like connective. Carpellary scales imbricated in four rows, with two erect 

 ovules at the base. Cone oblong, the few scales imbricated, expanding at 

 maturity, persistent. Seed winged. Cotyledons 2, oblong. — Trees or shrubs, 

 with scale-like imbricated persistent leaves. 



1. T. OCCidentalis, L. (Arbor-Vit.e.) Branches flat, distichous; 

 leaves ovate, obtuse, Avith a gland on the back, imbricated in four rows; 

 cones oblong, nodding, with the outer scales oblong, obtuse ; seeds broadly 

 winged, emarginate at each end. — Rocky banks on the mountains of Caro- 

 lina, and northward. — A small or middle-sized tree. Cones ^ long. 



9. TAXUS, Tourn. Yew. 



Flowers dioecious, axillary ; the sterile ones in globular few-flowered aments. 

 Anther cells 3-8, inserted under the peltate scale. Fertile flowers solitary, 

 scalv-bracted, consisting of a single ovule on a cup-shaped disk, which be- 

 comes large and berry-like in fruit, and surrounds the nut-like seed. Embryo 

 in the axis of mealy albumen. — Trees or shrubs, with scattered branches, 

 linear rigid distichous leaves, and .'^caly buds. 



\. T. Floridana, Nutt. Leaves narrowly linear, mucronate, conspicu- 

 ouslv petioled (about 9" long), the outer margin revolute; fruit not abundant; 

 the fleshy di.sk of the seed bright red. — Low ground along tlie east bank of 

 the Apalachicola liiver, Middle Florida.— A small tree 10° -20° high. 



