218 



APPENDIX II 



375. Buxus. Shrub, evergreen, glossy; plant 

 monoecious; male perianth 3-partite, inner seg- 

 nients 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^E (and CANNABINACE^) 



378. Humulus. Twining plant; plant dioecious; 

 female flowers in catkins, paired ; perianth of male 

 5-partite, of female scale-like; ovary i-celled. 



379. Cannabis. Plant herbaceous, dioecious; 

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

 female perigonium 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; style 

 slender. 



Order 73. MYRICACE^: 



382. Myrica. Shrub, aromatic; perianth o; 

 plant monoecious or dioecious; flowers in catkins 

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

 stamens 4-8. 



Order 74. AMENTACEJE 



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 catkin 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. 



387. 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 i-3-seeded. 



389. Fagus. Male flowers in globose catkin; 

 stigmas 3; involucre prickly, entirely enclosing 

 3-angled nut (mast). 



Order 75. SALICACEJE 



390. Salix. Tree, deciduous; plant dioecious; 

 leaves usually narrow; catkins generally erect 

 with overlapping entire scales; perianth o; stamens 

 1-5; fruit a i-celled nut. 



391. Populus. Tree, deciduous; plant dioe- 

 cious, leaves broad; catkins drooping with slashed 

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

 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. CERATOPHYLLACE.E 



393. Ceratophyllura. 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, dioecious; 

 leaves reniform, 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-partite, in 2 

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

 styles; berry 6-celled. 



Order 79. ORCHIDACE^: 



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; column slender; rostel- 

 lum o. 



399. Corallorrhiza. Saprophyte, leafless; peri- 

 anth meeting together; lip inferior, white with 

 purplish markings; spur o; column long; rostel- 

 lum o. 



400. Neottia. Saprophyte ; brown scales in 

 place of leaves; perianth hooded; pollen powdery; 

 spuro; 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 granular. 



