ANALYTICAL KEY TO THE NATURAL ORDERS. lxxi 
-♦-Flowers with a regular adherent calyx ; not in catkins or heads. 
Ovules several on a stalk from the base of the cell. Santalaceee, 397 
Ovule solitary, suspended from the top of the cell. 
Polygamous : filaments and style slender. Nyssaceee, 396 
Mono-dioecious : anthers and stigma sessile. Limb of the calyx ob¬ 
solete in the fertile flowers. Tree-parasites. Lorani'haceee, 398 
Flowers with a regular free calyx, or none; not in catkins or heads. 
Shrubs or trees. 
Calyx inch the achenium, berry-like in fruit. Dioecious. 
Calyx free and separate. 
Fruit a membranaceous winged samara. 
Fruit a drupe. 
One-celled: sessile stigmas 2, long. 
One-celled : style and stigma one. 
Anthers opening by uplifted valves. Dioecious. 
Anthers opening lengthwise. Flower perfect. 
Three-nine-celled : stigma or style 3-9-lobed. 
Eleagnaceee, 395 
Ulmaceee, 399 
Celtideee, 399 
Lauraceee, 394 
Thymeleaceee, 395 
Empetraceee, 409 
Herbs. 
Ovary 2-several-celled or lobed. 
Stigmas more than the cells. Pod dehiscent. Euphorbiace.ee, 463 
Stigmas and styles fewer than the cells. Indehiscent. CoUlitricliaceee, 402 
Stigmas equalling the cells or ovaries in number. (FI. perfect.) 
Calyx none : ovaries 3—5. Flowers spiked. Saururaceee, 401 
Calyx colored : styles 10. Flowers racemed. Phytolaccaceee, 385 
Ovary l-celled, 1-ovuled. (Calyx persistent, often inclosing the fruit.) 
Stipules forming sheaths. Leaves entire. Polygonaceee, 385 
Stipules not sheathing. Leaves lobed or compound. Cannabineee, 434 
Stipules wanting. 
Bracts and calyx scarious, imbricated. Amaranthaceee, 382 
Bracts not scarious : calyx fleshy or herbaceous. 
Styles 2-5. Embryo coiled. Chenopodiaceee, 375 
Style 1. Embryo straight. Urticeee,43£ 
-♦—i—i-Flowers (monoecious or dioecious), one or both sorts amentaceous. 
Fertile flowers only in a kind of catkin or strobile. Cannabineee, 434 
Sterile flowers only in catkins or heads. (Trees or shrubs.) 
Fruit a nut, with a cupule or involucre. Leaves simple. Cupuliferee, 413 
Fruit a dry drupe, naked. Leaves pinnate. Juglandaceee, 410 
Both kinds amentaceous or capitate. 
Bracts and calyx fleshy, berry-like in fruit. Moreee, 433 
Bracts scale-like. 
Fruit drupe-like, 3-celled, 3-seeded. Empetraceee, 409 
Fruit nut-like, drupe-like, or samara-like, l-celled, 1-seeded. 
Ovaries solitary under the scales. Fruit wingless. Myricaceee, 420 
Ovaries 2-3 under each scale. Nut often winged. Betu/aceee, 421 
Ovaries irregularly crowded in a head. Platanaceee, 433 
Fruit several - many-seeded pods. 
Pods woody, 2-celled, 2-beaked : seeds naked. Balsamifluee, 432 
Pods herbaceous, l-celled : seeds downy-tufted. Salicaceee , 424 
Subclass 11. GYMNOSPERM^E. Ovules and seeds naked. 
Flowers mono-dioecious in a kind of catkin. Coniferee, 438 
Class II. MONOCOTYLEDONOUS or ENDOGENOUS PLANTS. 
1. Flowers destitute of calyx and corolla , or on a spadix (sometimes 
with an imperfect perianth) ; not glumaceous or Grass-like . 
Terrestrial, mostly wilh a spathe. Fruit berry-like. Araceee , 445 
Terrestrial. Fruit nut-like, 1-seeded, naked or downy. Typhaceee, 450 
Aquatic (floating or immersed). 
