58 aNgiospermM 



long. White Mts., N., Welsh mts , Scotch Highlands. S. rosmarini- 

 fbtia, EosEMARY Willow, 2°-3° high. Lvs. linear-lanceolate, silky- 

 silvery, with few teeth or entire. Eur. Fig. 69, A. 



Ord. 18. Casuarinaceae. Bebfwood Tkeks. — Pis. J^ or ^ ^, 

 achlamyd. ; (^ in catkins; 9 in cone-like hds. of woody bracts. Pr. 

 a winged caryopsis. Shrubs or Trees, with many branches ; branches 

 slender, pend., jointed, striate, leafless, with scales for lvs. Eesem- 

 hling Equisetum. Wood hard, heavy, the color of raw beef ; made 

 into war-cluhs by the Maoris. Only genus Casuarina ; several species. 

 Australia, New Caledonia, Ind. Arch. 



Ord. 19. Myricaceae. Wax-Myrtles. — Pis. ^P or cp J>, achlamyd., 

 in short, cone-like catkins. Pr. » nut, or a drupe, succulent or waxy, 

 often edible. Fragrant Shrubs. 2 gen. ; about 20 species. 



1. Comptonia. Fls. often ^. $ catkin globular, bur-like. Pr. a 

 nut. C. asplenifolia, only species. Sweet Pern. 1°-2° high. Lvs. 

 .linear-lanceolate, pinnatifid, fern-like, decid. Can. to Maryland and 

 Wis. 2. Myrica. Usually 9 c^- ^r- a drupe. Species about 20, 

 temperate regions, both worlds. M. Gale, Sweet Gale. 2°-4°. Lvs. 

 cuneate-lanceolate, dark green, decid. Pig. Ill Wet shores of ponds. 

 Can. to Car., W. to Wis. M. eerifera, Wax-Mtrtle, 3°-8'' high. Lvs. 

 evergreen, dry-looking, cuneate-oblong. Drupe crusted with white 

 valuable wax ; used as candles. Sandy sea-shores, Nova Scotia to Pla., 

 W. ; also on Lake Erie. M. cajwnsis, finest of the species. Lvs. cor- 

 date, dentate, evergreen ; wax as in eerifera, but finer ; used as candles 

 by farmers ; eaten as bread by Hottentots. S. Af. 



Ord. 80. Platanaceae. Plane Trees. — Pis. J>, achlamyd., in 

 separate spherical hds. and intermixed with scales. 9 hds. long- 

 peduncled, persistent. Pr. a nut. Perisperm thin when present. 

 Lofty trees with spreading branches, and large petioled palmate 

 decid. lvs. Only genus Platanus. 5 or 6 species, closely resembling. 

 Eur., Asia, N. Af., N. Am. P. orientdlis. Oriental Plane Tree. 

 80° high. Lvs. 5-lohed. Levant. A favorite in all European gar- 

 dens. P. oceidentdlis, American Plane Tree (miscalled Syca- 

 more). 40°-50° high. Lvs. 5-angled. Trunk large, often 12° in 

 diam. ; outer bark falling off annually. Kiver-banks. Common, 

 U.S. 



Ord. 21. Betulaces. Birches. — Pis. ^, in separate scaly catkins. 

 9 achlamyd., rf monochlamyd. Ova. 2-eelled, 2-ovuled. Fr. a nut 

 or samara, l-oelled, 1 -seeded. Trees or Shrubs. Lvs. decid., simple, 

 alt. 2 gen., more than 60 species. Forests of Eur. (abounding in 

 Kuss.), Asia, N. Am., Peru, Colombia, Antarctic regions. 1. Alnus, 

 Aldkr. Anthers 2-celled. A. maH^ima, Sea-Side Aldbk. 20° high. 

 Lvs. oblong, serrate. Del., Maryland. Also in Japan. A. glutinbsa, 

 Common Aldbr. 50°-70° high. Lvs. ovate, serrate. Many fine 

 varieties. Eur., Asia, N. Af Wood valuable. The Kialto in Venice 

 is built of it. 2. Betula, Birch. Anthers 1-celled. B. alba. Com- 

 mon Birch, White B. 60°-80° high. Lvs. deltoid-ovate, pointed, 

 serrate. Bark white. Eur. Many fine varieties ; one, populifhlia, an 

 Am. tree 15°-20° high. Penn. to Maine. P. papyrdcea, Paper B. 

 Lvs. similar ; tree 60°-70° high ; wood and hark valuable. N. Eng. 

 to Can. and Wis. P. nigra. Black B. Lvs. ovate, lobed. 30°-50° 

 high. Kiver-banks, Mass., S. to Pla. and W. B. lenta, Pliant B., 

 Cherry B. 60° high. Lvs. cordate-acuminate, serrate. Wood red, 



