EXOGENS. 99 



50 species, small trees or shrubs; fls. tlue. Ind. M. edule, berries 

 edible. ' Sub-Ord. 2. Ova. 2- co -celled. Sds. minute. 1. Astronia. 

 Trees, Ivs. 3-ribbed ; fls. small, purple, racemed; berry oo-seeded. 

 Moluccas. Sub-Ord. 3. 9 Tribes ; distinctions in anthers and fr. 

 Tribe 1. 1. B14kea. Trees, shrubs ; Ivs. leathery, 3-5-ribbed. Fls. 

 large, handsome, white, rose-colored ; berry oo-seeded, often edible. 

 Trop. Am. B. quinquenerma, berry yellow, edible. W. Ind. Tribe 

 8. 1. Miconia. Shrubs, small trees ; Ivs. variable : fls. small, white ; 

 anthers curved. Berry globose. Trop. Am. Tribe 3. 1. Medinilla. 

 Anthers incurved; connective appendaged. Elegant shrubs; Ivs. 

 fleshy, ribs colored ; fls. large, rose or white, panicled ; peduncles and 

 pedicels red. Fr. a berry. Islands, Ind. Ocean. Tribe 4. 1. Sone- 

 rila. Herbaceous or shrubby ; fls. 3-merous, purple, in scorpioid 

 racemes. Boll depressed at top. " Many spec, E. Ind. Tribe 5. 1. 

 Bredia. Shrubs; sta. 8, unequal; fls. rose-colored, eymose. Japan, 

 China. Tribe 6. 1. Meriania (after Miss Merian, Brit, scientist). 

 Trees ; fls. large, purple, scarlet, crimson, yellow ; eymose ; sta. 10, 

 equal ; boll 3-5-celled. Trop. Am. Tribe 7. 1. Rh6xia, Deer- 

 GEASS, Meadow-beauty. QJ., low, often bristly herbs ; Ivs. sessile, 

 3-5-ribbed ; fls. large, pink, purple, yellow ; eymose or panicled ; 

 petals 4 ; sta. 8 ; ova. half-adh. ; boll 4-celled ; sds. cochleate. R vir- 

 ginica, R. Mariana, fls. purple. Penn. to 111., S. to Gulf. Tribe 8. 

 1. Melastoma. Small, haiiy shrubs ; Ivs. 3-5-7-ribbed ; fls. usually 

 6-merous ; large, purple, pink, or white, fascicled ; anthers 10 ; 5 

 large, spurred. Mauj' spec. Trop. Asia, Islands of Ind. and Pacific 

 Oceans. Tribe 9. Connective appendaged. 1. Centradenia. Un- 

 dershrubs ; Ivs. inequilateral ; fls. 4-merous ; sta. 8 ; fls. small, pink or 

 white, racemed; boll 4-celled. Sev. spec, Mex., Cent. Am. 2. 

 Lavoisiera. Shrubs with dichotomous branches, sessile Ivs. ; showy, 

 bracted terminal fls., which are 5- or lO-merous. Boll. 20 spec, 

 Brazil. 



Ord. 91. Myrtaceae. — Fls. § reg. ; rarely with irreg. sta. Corolla 

 polypetalous (monopetalous in Tribe 1), rarely ; sta. usually oo ; ova. 

 adh. or half-adh., 1-2-5- oo-celled. Shrubs, Trees, rxee\y Hei bs. 100 

 gen., 1500 spec. Both worlds, chiefly trop. 6 Tribes: 



Tribe 1. Corolla monopetalous, sometimes double. 1. Asteran- 

 thus. Corolla single, multifld ; sta. oo. Ova. adh. Lvs. alt., entire, 

 petiolate ; fls. sol., axil. Shrub, Brazil. 2. Napoleona. Corolla 

 double; sta. with filaments connate into a petaloid cup with many 1- 

 celled anthers. Berry pomegranate-like, 5-celled. Shrubs, resem- 

 bling Pomegranate. W. Af. N. imperidlis, fls. cream-colored, 

 axillary, in 3's. Tribe 2. Sta. oo ; filaments connate into a petaloid, 

 tongue-like cup. Berry or boll, oo-seeded. Trees, trop. Am. 1. 

 Lecythls, Monkey-pot Trees. 40 spec. ; tranks 80°-90° high be- 

 low the large hd. of branches with glossy foliage. Pyxis large, 

 woody ; sds. resembling Brazil nuts ; often edible. L. Olldria, pot 

 Fig. 156. 2. BerthoUetia excelsa, Brazil-nut Tree; 100°-150° 

 high, 3°-4° in diam. ; no branches, except near top. Boll 6' in diam., 

 18-24-seeded ; indehisc except by a pore at top ; shell Y thick, so hard 

 it must be split with an axe to release the sds. Fig. 201. Guiana, 

 Venezuela, Brazil, forming great forests. 3. Couroupita, Cannon- 

 ball Tree; similar; fls. large, pink or white, adventitious; boll 

 resembles a cannon-ball. Tribe 3, Sta. oo, often monadelphous. 



