132 ANGIOSPERMM. 



gen., 600 spec. ; trop. Am. ; rare in Asia; rarer in Af. and Australia. 

 4 Tribes: Tribe 1. Style 1. Coccus or samara. Several gen. 1. 

 Gaudichaiidia. Fls. dimorphous. Samara. Climbers. Mex. Tribe 

 2. Styles 3. Samara. Numerous gen. 1. Hiraea. Tls. yellow, 

 white. Climbers, hoth worlds. Tribe 3. Samara; or smooth or 

 feathered coccus. Sev. gen. 1. Banist^ria. Samara. Pis. yellow. 

 Trees, shrubs. Climbing or erect. Both worlds. Tribe 4. Cocci 

 free or connate into a fleshy or woody drupe. Usually erect. Nu- 

 merous gen. 1. Malpighia. Fls. yellow or white. Drupe, edible. 

 Many spec. M. $accharina, Sugar-plum ; tree 80° high. Sierra 

 Leone. M. ^'ZdSr-a, Barbadobs Chbbet ; shrub 10° high. W. Ind. 

 2. Byrsonima. Fls. yellow. Drupes small. 80 spec, trees, shrubs, 

 trop. Am. B. lucida, shrub. S. Fla., W. Ind. 



Ord. 123. Humiriacese. — Fls. g, reg., white, cymose. Pet. 5. 

 Sta. 10-20- 00, more or less connate at base; connective produced, 

 fleshy. Ova.' free, 5-6-7-celled. Fr. a drupe. Lvs. simple, alt., ex- 

 stip. Trees, Shrubs, usually balsamiferous. 4 gen., 20 spec. 1. Au- 

 brya, trop. W. Af. 2. Saccogldttis, 3. Vantanea, 4. Humiriutn, 

 . Guiana, Brazil. Humirium yields the fragrant Umiri balsam. H. 

 balsamiferum. 40° high; sta., Fig. 168, E. 



Ord. 124. Linaceae. — Fls. SJ,reg.,in raceme, panicle, spike, hd., 

 fascicle. Pet. 5-4, rarely 6. Sta. 5-4, with as many staminodes ; or 

 twice or thrice the number of pet. Boll, drupe. Lvs. simple, alt. or 

 opp. Herbs, Shrubs, Trees, both worlds. About 12 gen. 4 Tribes. 

 Tribe 1. Boll. Sta. twice or more than twice the number 6f pet. 

 Several gen. 1. Ixon4nthes. Pet. 5-6. Trees, shrubs, trop. B. Asia. 

 Tribe 2. Drupe. Sta. twice the number of pet. 1. Erythroxylon. 

 Pet. 5. Trees, shrubs, 70 spec. W. Ind., S. Am. E. Coca, shrub 8° 

 high ; fls. white. Lvs. furnish Cocaine. Pacific coast, S. Am. 

 Tribe 3. Drupe. Sta twice or thrice the number of pet. 1. Hugonia. 

 Pet. 5. Shrubs. ' Ind. H. M^stax, i-ts. violet-scented. Tribe 4. 

 Boll ; rarely indehisc. and 1-seeded. Sta. often with staminodes. Per- 

 fect sta. as many as pet. 4 gen. 1. Linum. Herbs, small shrubs. 

 Pet. 5. Fls. panicled, corymbed, fugacious ; of various colors. Many 

 spec, temp, regions. L. usiiatissimum, 0, erect; fls. blue, lvs. linear. 

 Stems furnish Flax; sds. are Linseed. Egypt, Asia. 



Subdivision 3. Thalainifl6rse. — Torus usually a. Thalamus (that 

 is, with all its floral parts free and distinct, as it were, in a common 

 bridal-chamber), rarely changed into a disk, gynophore, or gonophore. 

 Sta. often indef., sometimes monadelph. Pet. 1-2- oo -seriate. 



Mallow Alliance. — Fls. rarely irreg. Sepals 5-3, rarely 2-4, free or 

 connate. Pet. 5-2-4 or 0. Sta. usually oo and monadelph. or poly- 

 adelph. Ova. 3-co -celled, rarely 1 carpel. Ov. in inner angles of 

 cells. Lvs. alt., usually stip. Trees, Shrubs, Herbs, usually muci- 

 laginous. 125. Tili^cese. 126. Sterculiacese. 127. Malvaceae. 



Ord. 125. Tili^cese. — Fls. reg., g, rarely imperfect; pet. 4-5-0. 

 Fls. sol., or in small cymes, corymbs, panicles. Lvs. simple. Trees, 

 Shrubs, Herbs 40 gen., 330 spec, temp, and trop. regions, both 

 worlds. 7 Tribes, distinctions various. Tribe 1. 4 gen., 57 spec, 

 both worlds. 1. Elaeocirpus. Drupe, often edible. Pet. 5, dentate 

 or fimbriate ; fls. racemed. Lofty evergreen trees or shrubs. 50 spec, 

 Ind., Java, Australia, New Z. Tribe 2, 4 gen., 40 spec, both worlds. 

 1. Sloanea. Boll woody, bristly, often large ; dehisc Fls. small, 



