The Manual of the Botany of the Northern United States - novelonlinefull.com
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One to three, always fewer than the corolla-lobes.
VALERIANACEae, 228
Four or five; leaves opposite or whorled.
Ovary 1-celled; flowers in a dense involucrate head.
DIPSACEae, 229
Ovary 2--5-celled.
Leaves whorled and without stipules. RUBIACEae, 222
Leaves opposite or whorled, and with stipules. RUBIACEae, 222
Leaves opposite without stipules (petioles sometimes with stipule-like appendages). CAPRIFOLIACEae, 216
[2.] _Ovary free from the calyx (superior)._
[*] _Corolla irregular; stamens (with anthers) 4 and didynamous, or only 2._
Ovules and seeds solitary in the (1--4) cells.
Ovary 4-lobed, the style rising from between the lobes.
l.a.b.i.aTae, 403
Ovary not lobed, the style from its apex. VERBENACEae, 401
Ovules numerous or at least as many as 2 in each cell.
Ovary and pod 1-celled,
With a free central placenta; stamens 2. LENTIBULACEae, 395
With 2 or more parietal very many-seeded placentae; stamens 4.
OROBANCHACEae, 393
Ovary and fruit more or less 4--5-celled. PEDALIACEae, 399
Ovary and pod 2-celled, but the 2 placentae parietal.
BIGNONIACEae, 398
Ovary and pod 2-celled; placentae in the axis.
Seeds rarely few, not on hooks, with alb.u.men.
SCROPHULARIACEae, 377
Seeds few, borne on hook-like or other projections of the placentae; no alb.u.men. ACANTHACEae, 399
[*][*] _Corolla somewhat irregular; stamens (with anthers) 5._
Stamens free from the corolla; anthers with their cells opening by a hole or c.h.i.n.k at the top. Rhododendron, in ERICACEae, 320
Stamens inserted on the corolla.
Ovary deeply 4-lobed around the style. Echium, in BORRAGINACEae, 367
Ovary not lobed; pod many-seeded.
Filaments or some of them woolly. Verbasc.u.m, SCROPHULARIACEae, 379
Filaments not woolly. Hyoscyamus, SOLANACEae, 376
[*][*][*] _Corolla regular._
[+] _Stamens as many as the lobes of the corolla._
Ovaries 2, separate; their
Styles and stigmas also wholly separate.
Dichondra, CONVOLVULACEae, 368
Stigmas and sometimes styles united into one.
Filaments distinct; pollen in ordinary grains. APOCYNACEae, 337
Filaments monadelphous; pollen in ma.s.ses. ASCLEPIADACEae, 338
Ovary one, but deeply 4-lobed around the style (or 2-lobed in Heliotropium).
Leaves alternate. BORRAGINACEae, 360
Leaves opposite. Mentha, in l.a.b.i.aTae, 407
Ovary one; pod 2-lobed or 2-horned at the summit. LOGANIACEae, 345
Ovary one; not deeply lobed,
One-celled, one-ovuled, becoming an achene. PLANTAGINACEae, 422
One-celled, with ovules parietal or on 2 parietal placentae.
Leaves (or in Menyanthes three leaflets) entire. GENTIANACEae, 346
Leaves toothed, lobed, or pinnately compound. HYDROPHYLLACEae, 357
Two- to ten-celled.
Leafless parasitic twining plants. Cuscuta, in CONVOLVULACEae, 370
