lxx 
INTRODUCTION. 
Embryo large, crumpled or coiled : little albumen. Convolvulacea, 347 
Embryo small, in copious albumen. 
Leaves opposite, with intervening (stipules). Rubiacea, 176 
Leaves destitute of stipules. 
Stamens 4. Pod circumscissile. Plantaginacea, 278 
Stamens 5. 
Corolla lobes convolute in the bud. 
Anthers opening lengthwise. P olenwnxacea ,343 
Anthers opening transversely. Diapensiacf.a,M6 
Corolla plaited or infolded-valvate in the bud. Solanacea, 35- 
Ovary compound, with parietal placentas. 
Leaves simple and entire, opposite. Gentianacea.Xfi 
Leaves simple or3-foliolate, alternate: cor.valvate. Menyanthidea, 356 
Leaves cut-lobed or pinnate, alternate. Hydrophyllacea, 340 
Ovaries forming 4 achenia around the style. Boraginacea, 334 
^ ? ® r ' es ~ (forming pods) connected at the apex by a single stigma. 
Anthers cohering over the stigma : pollen powdery. Apocyrtacea. 364 
Anthers fixed on the stigma: pollen waxy. Asctepiadacea, 363 
* * * Stamens (2) fewer than the lobes of the regular corolla. Olearea, 371 
* * * * Stamens fewer than the lobes of the irregular or unsymmtlri • 
cal corolla , diandrous or didynamous {the fifth rudimentary or none). 
Ovaries forming 4 little achenia around the base of the style. Labiitta, 313 
Ovary I - 4 ovuled, splitting into as many 1-seeded nutlets. Verbenacea, 311 
Ovary several - many-ovuled, forming a pod in fruit. ^ 
One-celled, with a free central placenta. Stamens 2. Lentibulacea, -S7 
One celled, with 2 -4 parietal placentae. Stamens 4. Orobanchacea, 
1 wo-celled, with winged exalbuminous seeds. Bignoniacea,-^ 
4 our - five-celled (falsely) with wingless exalbum, seeds. Sesamea. 
1 wo-celled, with few wingless exalbuminous seeds. Acanthacea, * 
1 wo-celled, with (usually many) albuminous seeds. Scrophulariacea, 2^* 
Div. III. APLTALOLTS. Corolla (sometimes calyx also) wanting. 374 
1. Apetalous forms of Polypetalous or Monopetalous Orders . 
Stamens indefinite. Ranunculacea, 1 
Stamens definite (10 or less). 
Calyx adherent; the 
Stamens (4-5) as many as and alternate with its lobes. Rhamnncea, 84 
^tamens as many as its lobes and opposite them, or 1. Haloragea. 
. tana, double the calyx-lobes. Chrysospleniuin in Saxifragacea, 147 
Calyx free (in Fraxinus often none). 
Leaves alternate. 
Pod 4-horned, 4 celled. Penthorum in Crassulacea, 143 
rods 3-5 from separate simple pistils. Zanthoxyhcea, J* 
Achenia 1 —5, in the base of the calyx °—— imrhe/r. 113 
Leaves opposite, compound or lobed. 
Fruit a double samara. Stamens 5-8. 
Fruit a simple samara. Stamens 2 - 4 . 
Leaves opposite, simple and entire. 
Pod 3-cel led : styles 3. 
Pod I celled. 
Styles 2 - 5, or 2 - 5 cleft. 
Style and stigma one. 
Sangnisorbea, 
Accracea. 79 
Fraxinus in Oleacea,ol 
Molluginea , 
57 
Caryophyllacea, 
Glaux in Primulacea, 
2. Proper Apetalous Orders. 
* Fruit many-seeded , 2- several-celled. (Flowers perfect , not in catkins) 
Calyx adherent below to the G-celled fleshy fruit. Aristo/ochiacea. 
Calyx none. Capsule 2-celled, 2-valved. Podoslcmacea, 403 
* * Fruit with only one seed in each cell. 
