EXOGENS. - 61 



lia, S. Af. 4, Profea. Fls. in hds. B'-S' in diam., often with slunvy 

 colored silky bracts. Extensive genus. Trees or shrubs ; chiefly S. 

 African. 



Ord. 24. Elseagnacese. Olbastbrs.— Pis. § , ? J>, $ § Ji ; infl. 

 compound or sol. Fr. berry-lilce, an akaine in the accrescent (edible) 

 perianth. Trees or Shrubs, with silvery-scaly, simple, entire Ivs. 4 

 gen., 30 species. Northern hemisphere. 1. Elaeagnus horUnsis, 

 Oleastek, 20° high, Eur. ; E. argentea, similar, Western U. S. 2. 

 Sheph6rdia canadensis, Can. ; S. argentea with red berries, N., N. 

 "W., two low, pretty shrubs. 3. Hippophae, Sba Btjckthorn, Sal- 

 LOWTHORN. Few gen. Trees or shrubs. Berries bright orange, edible. 

 Eur., Asia. H. rhamnoides. Tree 20°-30° high, branches spiny- 

 tipped. Eur. 4. Coniileum. Bush, fruit unknown. W. Af. 



Ord. 88. Thymeleaceje. Daphnes.— Fls. § or ? ^ c?, infl. sol. 

 or compound, often handsome, fragrant. Fr. a nut, drupe, berry, or 

 boll. Trees or Shrubs. Lvs. usually shining. 40 gen., 370 spec, 

 cosmop. 2 Sub-Orders : 



Sub-Ord. 1. Ova. 2-celled. Aquilaria .4(/(iHocAa, Eagle-wood of . 

 ancients, Alobs-wood of Scripture. Large tree, wood fragrant, burnt 

 as incense. Asia. Sub-Ord. 2. Ova. 1-celled. 1. DAphne. Shrubs. 

 Fls. clustered. Fr. a drupe. Many fine species. Tropics, both worlds. 

 D. Afezer-eum, MezIirbon. Bush, fls. pink, appearing before lvs. Eur. 

 Ov., Fig. 180, D. D. odbra, China. 2. Lagetta lintedria, Lacebark 

 Tree. Small tree. Liber fine, strong, lace-like. Jamaica. Fig. 230. 

 3. Dirca palustris (only species), Leatherwood. 2°-6° high, liber 

 tough. tJ. S., Can. 



Ord. 26. Hernandiaceae. — Fls. j^, in threes, 9 in centre ; involu- 

 crate, panicled. Ova. adh. Fr. a large dry drupe, included in the 

 hollow calyx-tube. Ti-ees ; lvs. entire, cordate, peltate. Wood spongy, 

 used for tinder. Only genus Hernindia, 4 species. E. and W. Ind., 

 Guiana. H. sonora, Jaok-in-a-box. Fruits (dry drupe in the large, 

 hollow, closed calyx-tube) emitting, when the wind blows, a wild loud 

 whistling sound, the terror of ignorant travellers. 



Laurel Alliance. — Characters of Daphne Alliance, but ova. always 

 free. Sta. often quadrivalvular. Perisperm 0. Lvs. simple, entire, 

 exstip. One Order: 



Ord. 27. Lauraceae. — Trees, Shrubs, Undershrubs ; sometimes 

 climbing ; aromatic, sometimes fetid ; rarely parasitic, leafless twiners. 

 Fr. fleshy or dry. 50 gen., 500 species. 3 Sub-Orders. Types only 

 given : 



Sub-Ord. 1. Gyroc4rpus. — Pis. $ g ;;?*, in dense panicles. Pr. 

 nut-like, winged. Trees, trop. Am., E. Ind. Sub-Ord. 2. C4s- 

 sytha, Doddbr-Laurbl. Fls. § , spicate. Leafless Dodder-like 

 twiners ; several spec. ; tropics, both worlds, Australia. Pr. drupe- 

 like, often edible. 



Sub-Ord. 3, True Laurels. — Pis. usually clustered. 1. Benzoin 

 {Lindera), Spicebitsh, Benjamin. Fls. 9 c^ ; berries red. Aro- 

 matic, decid. Shrubs; 12 species, N. Am., S. Af. B. odoriferum, 

 6°-15° high, TJ. S., Can.; B. melisscefblia, 2°-Z° high, S. States. 2. 

 Laiirus, Latrel. $ ^ or $ g (^; berries black. Shrubby ever- 

 green trees or shrubs. Lvs. lanceolate. Few species, many var. ; 

 Medit. States, Asia. L. nobilis, Noblb (Classic) L., Bay. Shrubby 

 tree, 15°-60° high. Medit. States. 3. Tetranthfera. Many species, 



