650 PALM^. 



Order CASUARINACE^. 



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

 Flowers in spikes, niono^cious or dia'cious, tiie 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 acheniuni. 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 anients purple, female aments peduncled, two or more together ; 

 cones recurved, oval or cylindric-conical (3'-f/ 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 

 10° -40° 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 PALM^. 



OREODOXA, WiUd. 



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

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



