to _ GAMOPETALE. 
e. Style one or none, stigmas two. 
Leaves opposite or whorled, sessile, entire............-++00 Sitesedidiene Gentianacess, 
Leaves opposite, lobed: fluwers small in spikes................+-.... werbenacess, 
Leaveg alternate or radical, 3-foliolate: corolla bearded.............--- Menyanthes, 
Leaves alternate. Flowers not axillary....... gaiilavconmabexsertien Hydrophyllacess, 
Flowers in a head with acerose bracts.................05 -Gilia, 
Flowers funnelform: twining or creeping vines....... Convolvulus, 
J,eaves radical: flowers solitary on scapeS...........--46+ Pate Mieaieieles Hesperochiron, 
Ae Style:2, BUGMET S veweccesanee sen oeddvensaeonaae oueeain watery Polemoniacez, 
6. Style 2-cleft.... 2... Seve se deen edad ee eeasreRe Aumeresin nee Au Hydrophyllacex, 
Sf. Styles 2: leaves simple siuid alternate or none. 
Piowers solitary, axillary, white: leaves silky..........-...eeee cece cere eee Cressa, 
Mlowers clustered on filiform, leafless orange or yellow twining stems....... Cuscuta, 
flowers 5 or 6 lines long: shrubs or wood-based herbs.......... Hydrophylacez, 
* * * Stamens fewer than the lobes of the slightly irregular corolla. 
Stamena 4: flowers in slender spikes: leaves opposite, lobed.......... Verbenacess, 
Stamens 3: style 3-cleft: sepals 2: leaves opposite, entire............... 0.6 Montia, 
Stamens 2 or 4: ovary 2-celled.............4- ee sceecescceess.-0crophulariacess, 
2. Flowers irregular: style 1; stigma entire or 2-lobed. 
Leaves or scales not opposite. 
Corolla flattened, heart-shaped: stamens 6, united in 3’s..............Dicentra, 
Corolla curved: leafless root-parasites: stamens 4..,..........Orobanchaces, 
Corolla more or less 2-lipped: ovary 2-celled: stamens 2 to 5..Scrophulariacess, 
Corolla 2-lipped, spurred: ovary 1-celled: stamens 2: aquatic. .Lentibulariacess, 
Leaves opposite or whorled: stamens 2 or 4. 
Ovary 2-celléds: 2.6 s.seesecss sever esseedees soesecee..--Scrophulariaces, 
Ovary 4-parted, forming 4 ee: like nutlets........ 0.0... ee. eee Labiates, 
Ovary 2-4-lobed: small flowers in spikes or heads............... Verbenacess, 
DIVISION 3.—APETALZ 
A. OVARY INFERIOR (calyx adherent) or apparently so. 
Leaves cordate: calyx 3-lobed: ovary 6-celled. (See Cal, Flora)... Aristolochiaces.., 
Leaves palmately lobed tendril-bearing vines...........0..20.000- Cucurbitaces, 
Leaves pinnate: calyx-tube 3-4-angled, prickly................ .22c0eee Rosacesas, 
104 
93 
105 
105 
& = 
