650 PALMJ3. 



ORDER CASUABINACE^. 



Trees or shrubs, with leafless jointed furrowed branches, like Equisetum. 

 Flowers in spikes, monoecious or dioecious, the staminate ones in whorls at 

 the joints, monandrous, 4-bracted, the pistillate flowers capitate, without 

 floral envelopes. Ovary 1-celled, with 1-2 orthotropous ovules, forming in 

 fruit a winged achenium. Styles 2. Albumen none. Radicle superior. 



CASUARINA, Humph. 



Characters of the Order. 



C. equisetifolia, Forst. Branches filiform, simple; furrows 6-8; 

 teeth of the sheaths, as many, keeled on the back ; staminate spike terminal, 

 the pistillate lateral, short-peduncled. Keys of South Florida (Curtiss). 



ORDER CONIFERS. 

 PINUS, Tourn. 



P. Elliottii, Engelm. Leaves 2 - 3 in a sheath, 7' - 12' long ; bracts long- 

 fringed ; male aments purple, female aments peduncled, two or more together ; 

 cones recurved, oval or cylindric-conical (3'-6' long) ; wings 4-5 times longer 

 than the seed. (P. taeda, var., Ell.) Low ground, Florida to South Caro- 

 lina. A large tree. 



P. inops, var. clausa, Engelm. Leaves longer and finer ; cones nearly 

 sessile, spreading or reflexed, mostly persistent for years ; bracts 8 or 9 ; 

 cotyledons mostly 4. Barren sandy ridges near the coast, Florida. Tree 

 IQO _ 4Qo high. Wood valueless. 



ABIES, Tourn. 



A. Caroliniana, Engelm. (as Tsuga). Leaves larger than in A. Cana- 

 densis, 6" -8" long, deeper green and more glossy, notched at the tip ; cones 

 larger (12" -14" long), the oblong scales widely spreading at maturity. 

 Mountains of North and South Carolina, on dry hills. A small tree. 



JUNIPERUS, L. 



J. COmmunis, L. (COMMON JUNIPER.) Shrubby, widely spreading; 

 leaves 3 in a whorl, spreading, linear-lanceolate, white on the upper surface, 

 the margins involute; drupes large. Aiken, South Carolina (Ravenel), and 

 northward. 



ORDER PALMJE. 

 OREODOXA, Willd, 



Flowers monoecious, sessile, bracted. Sepals 3, imbricated, at length 

 united. Petals 3, valvate. Stamens 6, 9, or 12. Ovary 3-celled, with six 



