ANALYSIS OF THE NATURAL ORDERS. 195 



C Flowers in a compact head surrounded by an involucre. Composite. 70 



c Flowers separate, irregular, perfect. Plants erect. Loeeliacl.e. 71 



c Flowers separate, regular, imperfect. Weak vines. Oed. 58 



d Leaves alternate. Flowers 5-parted, regular, separate. Campaxulace.s. 72 



d Leaves opposite, with stipules between, or vcrticiilate. EubiacEjE. 67 



d Lvs. opp. Stipules none. — Stam. 5 — 4. Ov. £ — 5-celled. Capeifoliaci:^. 66 



— Stam. 2—3. Ov. 1-eelled. Valekianace.e. 08 



— Stamens 4. Flowers capitate. Dipsaccs. 09 



e Herbs. Ovary with 5 styles and but 1 seed. PujMBAGi.\'Acr,rE. 80 



e Herbs. Ovary with 1 style and many seeds. Prejiulacejs. 78 



c Trees or shrubs. Ov. 1-styled, 5-celled, 1-sccdcd. Sapotacex. 77 



f Style none. Drape 4 — seeded. Aquifoliace.e. 74 



f Style one. Drupe 4-seeded. Veebenace^b. 88 



f Style ^ ne. Capsule 3 — 5-celled, CO-seeded. E3icacejE. 73 



g Ovary deeply 4-parted, forming 4 achenia. Boeeagen-aceje. 90 



g Ovaries 2, distinct (often covered by the stamens), (h) 



g Ovary 1, compound, 1-ccllcd (placenta often large), (k). 



g Ovary^l, compound, 2 — 6-celled. (m). 



h Stigmas connate. Flower bud convolute. Apocyn-ace/E. 90 



h Stigmas connate. Flower bud valvate ? Asglepiadace^e. 97 



h Stigmas distinct. Flowers minute, yellow, Convolvclacl^. 93 



k OvulesLseJieral. Leaves cleft and lobed. IIydeophyllace^e. 91 



k Ovules several. Leaves (or leaflets) entire. Gentiaxacex. 95 



k Ovule solitary. Corolla limb entire. Oed. 101 



m Leaves opposite. — Ovary 2-celled. Logaxiacejs. 85 



— Ov. 3-celled. Not twining. > 

 m Leaves alternate.— Ov. S-celled. Not twining. \ rouataxueBJt. 92 

 — Ov. 2-celled. Twining. Conyolvulace.£. 93 

 — Ov. 2-celled, 4-seeded. Erect. BoREAGixACEiE. 90 

 — Ov. 2-cellcd, CO-seed. — Styles 2. Hydeopeyl. 91 

 — Style 1. Solanacex. 94 

 n Herbs. Corolla 4-parted, dry, scarious. Plantagi>jace.s:. 79 



n Shrubs. Corolla 5-parted, imbricated in bud. Jasminace^e. 98 



n Shrubs. Corolla 4-parted, valvate, or none. Oleace.2. 99 



O Ovary deeply 4-parted, forming 4 (or fewer) achenia. (p) 

 o Ov. entire, 4-ovuled, 4 or fewer-seeded. Lvs. opposite. Vehbbnacejb. 87 

 o Ovary entire, CO-ovuled, CO or several-seeded, (s) 



p Leaves opposite. Stems square. Stamens 2 — 4. Laelvtx. 89 



p Leaves alternate. Stems round. Stamens 5. Boeeagixacex. 90 



8 Trees or climbing shrubs. Seeds winged. BigxoniacejE. 83 



s Trees. Seeds not winged. Sceopii. 86. Erect shrubs. Ekicace^e. 73 



8 Herbs. — Leafless parasites. OEOEAxenACE^:. 82 



— Lvs. at base. Fruit 1-eelled. Fls. spurred. Lentibdlace^:. 81 



— Leafy.— Fruit 4 — 5-celled. Leaves opposite. Pedaliacex. 84 



—Fruit 2-celled. (t) 



t Corolla convolute in bud. Seeds cxalbuminous. Acanthace,e. 87 



t Corolla imbricate in bud. Seeds albuminous. Scbopiiulaeiace^e. 86 



t Corolla plicate in bud. Seeds albuminous. Solaxace^h. 9-4 



C Cohort 3. APETALOUS. 



T ' .ants herbaceous, the flowers not in aments (except Humulus, 115). (2) 

 1 t lapts woody, — shrubs or trees. (5) 



2 Flowers with a regular calyx (or a calyx-like involucre). (3) 

 2 Flowers achiamydeous, — neither calax nor corolla, (f) 



3 Calyx tube adherent to the ovary, limb lobed, toothed, or entire, (a) 

 3 Calyx free from the ovary, sometimes enclosing it. (4) 



