XIV 



ANALYTICAL ARTIFICIAL KEY. 



PLANTAGINACEiE-, 75. 



OLEACE.fi, 59. 



AsCLEPIADACE.fi, 61. 



ApOCYNACE.fi, 60. 

 BoRRAGlNACE.fi, 65. 



POLEMONIACE.E, 63. 

 CoNVOLVULACEiE, 66. 

 GENTIANACEiE, 62. 



* * With ordinary green herbage. 

 +- Corolla regular or nearly so : stamens riot didynamous. 

 Corolla scarious and veinless : stemless herbs. 

 Corolla more or less veiny. 



Stamens 2 or 3, bnt parts of corolla 4 or 5. 

 Stamens 5, sometimes 4, as many as the corolla-lobes. 

 Pollen in solid waxy masses : fruit a pair of follicles. 

 Pollen in powdery grains. 



Ovaries 2 : fruit a pair of follicles. 



Ovary 4-lobed, forming 4 separate or separable seed-like nutlets. 



Ovary single and entire. 



Style 3-cleft at apex : capsule 3-celled : corolla convolute. 

 Styles or stigmas 2 or 1. 



Ovules and seeds at most 4, large, with large embryo and 



little or no albumen : peduncles axillary. 

 Ovules few or numerous : embryo small, in albumen. 

 Leaves all opposite or whorled and entire : capsule 



1-celled : corolla convolute in the bud. 

 Leaves alternate, 3-foliolate : leaflets entire : corolla in- 

 duplicate : flowers racemose. Menyanthes in GentianacejE, 62. 

 Leaves various, mainly alternate. 



Styles 2, or 1 and 2-cleft (except in Eomanzoffia) : cap- 

 sule 1 - 2-celled. HYDROPHYLLACEiE, 64. 

 Style only 1 : stigma usually 1 : capsule or berry 



2-celled, or rarely more, many-seeded. SoLANACEiE, 67. 



See also Verbaseum & Limosella in Scrophulariaceje, 68. 



+- +- Corolla irregular : stamens (with anthers) only 4 and didynamous, or 2 : style 1. 

 Ovary and capsule 2-celled, few - many-seeded. 



Seeds small, mostly indefinite : embryo small in copious albumen. 

 Seeds larger in proportion, filled by the flat embryo. 

 Numerous in a long capsule, winged, on a partition which sepa- 

 rates from the valves. 

 Few, on hooked processes of the placenta. 

 Ovary and capsule 1-celled, with many-seeded placentas in the axis. 

 Ovary 4-parted, in fruit as many seed-like nutlets. 

 Ovary undivided : fruit splitting into 2 or 4 one-seeded nutlets (or 



berry-like with as many stones). Verbenacejs, 74. 



SCB.OrHULAEIACE.fi, 



Bignoniace^e, 71. 



ACANTHACE.fi, 72. 



lentibdt.arie.e, 70. 

 Labiate, 73. 



Apetalotjs Forms in Polypetalous and Gamopetalous Orders. 



Carpels several or numerous and distinct : stamens hypogynous. 

 Carpels single and simple : calyx- also wanting. Achlys 



Carpels 1 or 2, rarely 3, distinct and free : stamens on the calyx. 

 Carpel single and simple : stamen epigynous. Hippuris 



Carpels combined into a compound ovary, which is 

 One-celled and 1 - 2-ovuled. 

 Herbs with scarious stipules. 



Shrubs without stipules. Pistacia 



Two - four-celled, with one or at most two ovules in each cell. 

 Aquatic herbs. Myriophyllum 



Terrestrial herbs, 2-seeded. Lepidium 



Shrubs or trees, 



With alternate simple leaves and fleshy fruit. 

 With opposite compound or lobed leaves, and 

 Single 1-celled 1 -seeded samara for fruit. Fraxinus 



A pair of samaras. Acer & Negundo 



One-celled and many-ovuled : herbs. 

 Placentas 3, parietal : ovary inferior. 

 Placentas 2, parietal : ovary partly superior. 

 Placenta 1, central or basal : leaves mostly opposite. 



Style and stigma one. Glaux 



Styles or at least stigmas 3, or rarely more. 

 Two - five-celled and many-ovuled. 



Herbs, with free calyx and green herbage. 



Herbs, with adnate calyx and green herbage. Ludwigia 



Herbs destitute of green herbage. Allotropa 



Shrub, with alternate lobed leaves. 



BANUNCULACE.fi, 1. 

 in BERBERIDACE.fi, 2. 

 R0SACE.fi, 32. 



in Halorage^:, 38. 



lLLECEBRACE.fi, 15. 

 in ANACAEDIACE.fi, 30. 



in HALORAGE.fi, 38. 



in Crtjcifekje, 7. 



RHAMNACE2E, 27. 



in Oleaceje, 59. 



in SAPINDACE2E, 29. 



Datiscace/E, 42. 



SAXIFRAGACE.fi, 34. 



in PPJMULACE/E, 57. 



CARYOPHYLLACE2E, 14. 



FlCOIDE.fi, 44. 



in Onagrace/e, 39. 

 in Ericaceae, 54. 



Sterculiace/e, 21. 



