2l8 



APPENDIX II 



375. Buxus. — Shrub, evergreen, glossy; plant 

 monoecious; male perianth 3-partite, inner seg- 

 ments 2; stamens 4; female perianth 4-partite, 

 inner segments 3: capsule 3-celled. 



376. Mercurialis. — Plant monoecious or di- 

 oecious; perianth 3-partite; 9-16 stamens in 

 male, 2 barren filaments in female flowers; style 

 forked; capsule 2-celled. 



Order 71. Ulmace.* 



377. Ulmus. — Tree, deciduous; perianth 4-5- 

 partite; stamens 5; styles 2; capsule winged. 



Order 72. Urticace.* (and Cannabinace^) 



378. Humulus. — Twining plant; plant dioecious; 

 female flowers in catkins, paired ; perianth of male 

 5-partite, of female scale-like; ovar}' i-celled. 



379. Cannabis. — Plant herbaceous, dioecious ; 

 flowers in racemes; stamens 5; perianth s-partite; 

 female perigoniuni i -leaved. 



380. Urtica. — Leaves opposite, with stinging 

 hairs; plant herbaceous, monoecious or dioecious; 

 male perianth 4-partite; stamens 4; female 

 perianth 2-partite; flowers in racemes. 



381. Parietaria. — Leaves alternate, hairs 

 simple; flowers polygamous, in axillary clusters; 

 perianth bell-shaped, 4-partite; stamens 4; st3'le 

 slender. 



Order 73. MvRiCACEyE 



382. Myrica. — Shrub, aromatic; perianth o; 

 plant moncecious or dicecious; flowers in catkins 

 with concave scales; IVuit drupe-like, i-celled; 

 stamens 4-8. 



Order 74. Ament.\ce.« 



383. Betula. — Tree, deciduous; plant monoe- 

 cious; flowers in catkins; scales of female catkins 

 thin, deciduous, 3-fid; stamens 2; perianth o; 

 fruit with membranous margin. 



384. Alnus. — Tree, deciduous; stamens 4; 

 female calkin small, ovoid ; scales persistent, 

 woody; fruit not winged. 



385. Carpinus. — Involucre leafy, 3-lobed; female 

 spike large, with many leafy scales; stigmas 2; 

 scales of male catkin 3-cleft. 



386. Corylus. — Tree or shrub'; scale of male 

 catkins round; involucre leafy; anthers i-celled; 

 stigmas 2, red. 



3S7. Quercus. — Tree, deciduous; male catkins 

 slender; stigmas 3; involucre a cupule, entire; 

 not spiny or leafy; nut (acorn) i-seeded. 



388. Castanea. — Stamens 8-20; involucre muri- 

 cate, 4-lobed; stigmas 5-8: nut 1-3-seeded. 



389. Fagus. — Male flowers in globose catkin; 

 stigmas 3; involucre prickly, entirely enclosing 

 3-angled nut (mast). 



Order 75. Salicace.^ 



390. Salix. — Tree, deciduous; plant dioecious; 

 leaves usually narrow; catkins generally erect 

 with overlapping entire scales; perianth 0; stamens 

 1-5; fruit a I-celled nut. 



391. Populus. — Tree, deciduous; plant dice- 

 cious, leaves broad; catkins drooping with slashed 

 scales; perianth cup-shaped; stamens 4-30; Iruit 

 nearly 2-celled. 



Order 76. EmpETRACE^E 



392. Empetrum. — Heath-like low shrub; calyx 

 3-partite; petals 3-partite; stamens 3; drupe 

 black. 



Order 77. Ceratophvllace.-e 



393. Ceratophyllum. — Aquatic ; plant monoe- 

 cious; leaves forked, whorled, linear, spinose; 

 anthers 12-20, sessile; perianth o; ovary i-celled; 

 stigma unilateral. 



MONOCOTYLEDONS 

 Order 78. Hydrocharidace^ 



394. Elodea (Anacharis). — -Aquatic, submerged; 

 plant dioecious; leaves linear, opposite or in 

 whorls ; flowers small, male rare, female long- 

 stalked; calyx 3-partite; spathe 2-fid. 



395. Hydrocharis. — Aquatic plant, dicecious; 

 leaves reniforni, floating; flowers large; calyx 

 3-partite; petals 3; males with stamens, 9-12 in 3 

 rows, and 3 functionless styles; female with 3 

 functionless filaments, 3 scales, and 6 styles; 

 capsule 6-celled. 



396. Stratiotes. — Plant submerged and floating 

 alternatively, dioecious; leaves ensiform, serrate; 

 flowers white, large; perianth 6-partile, in 2 

 rows; male with 12 stamens, female with 6 2-fid 

 styles; berry 6-celled. 



Order 79. Orchidace.e 



397. Malaxis. — Herbaceous, leafy; perianth 

 spreading; lip superior; spur o: rostellum short; 

 pollen-masses connected above; column short. 



398. Liparis. — Herbaceous, leafy; perianth 

 spreading; lip inferior; cohinm slender; rostel- 

 lum o. 



399. Corallorrhiza. — Saprophyte, leafless; peri- 

 anth meeting together; lip interior, white with 

 purplish markings; spur o; column long; rostel- 

 lum o. 



400. Neottia. — Saprophyte ; brown scales in 

 place of leaves; perianth hooded; pollen powderv; 

 spur o; lip turned down, yellowish brown, 2-lobed, 

 enlarged below; rostellum flat. 



401. Listera. — Leaves in pairs, sub-opposite; 

 perianth spreading; lip turned down, linear, free; 

 pollen powdery; rostellum leaf-like, arching over 

 stigma. 



402. Spiranthes. — Leaves several; flowers spiral 

 on stalk; perianth gaping; lip inferior with fleshy 

 projections below, clawed; lateral sepals coloured; 

 rostellum straight; 2-fid at length. 



403. Goodyera. — Leaves several; perianth 

 gaping; lip swollen below, entire, free; rostellum 

 2-partite; pollen-grains cohering. 



404. Epipogium. — Saprophyte, brown, leafless; 

 perianth spreading, lip superior; ovary not 

 twisted; pollen gninular. 



