292 GROUPS AND ORDERS. 



Subclass II. Monopetalois Exogenous Plants.* 



Floral envelopes consisting of both calyx and corolla ; the petals more or less 

 united (monopetalous or gamopctalous). 



CONSPECTUS OF THE GROUPS AND ORDERS. 



Groi'P 1. Ovary coherent with the calyx (inferior), 2 - several-celled, with one or many ovules in each cell. Seeds 



albuminous. Stamens inserted on the corolla. 

 Order 51. Caprifoluce^. Stipules none. Leaves opposite. 



52. RuBiACEfi. Stipules hetwecn the petioles ; or the leaves in whorls. 



1. Suborder StellatjB. Leaves in whorla. 



2. Suborder Cincuoneje. Leaves opposite. 



Group 2. Ovary coherent with the calyx, one-celled and one-ovuled, rarely 3-celIed with two of the cells empty. Seeds 

 with little or no albumen. Stamens inserted on the corolla. 



53. Valerunaceje. Flowers not in involucratc heads. Stamens distinct. Seeds without albumen. 



54. DiPSACEiE. Heads dense, involucrate. Stamens distinct. Seeds albuminous. 



55. CoMPOSiTjE. Heads dense, involucrate. Stamens syngenesious. Seeds without albumen. 



Group 3. Ovary coherent with the calyx, with 2 or more cells and numerous ovules. Fruit capsular. Seeds albuminous. 

 Stamens inserted with the corolla : anthers not opening by pores. 



56. LoBELiACEiE. Corolla irregular. Stamens united. 



57. Campandlacbje. Corolla regular. Stamens distinct. 



Group 4. Ovary free from the calyx, superior, or sometimes coherent with it, with 2 or more cells and numerous ovules. 

 Seeds albuminous. Stamens inserted with the corolla, or rarely coherent with its base, as many or twice as 

 many as its lobes: anthers mostly opening by pores or chinks. 



58. ERicACEa:. Character same as that of the group. 



Group 5. Ovary free, or rarely coherent with the calyx, several-celled, with a single ovule (or at least a single seed) in 

 each cell. Stamens definite : anthers not opening by pores. — Trees or shrubs. 



59. AauiFoi.iACE^. Sepals 4 - G. Corolla 4 - G-parted or cleft. Stamens as many as the segments of the corolla. 



Fruit drupaceous, with 2 - G stones or nucules. — Leaves mostly coriaceous. Flowers small, axillary. 



60. Ebenaceje. Calyx and corolla 3 - 6-clefl. Stamens 2-4 times as many as the lobes of the corolla. Fruit a 



berry. 



Group 6. Ovary free (superior), or with only the base coherent with the tube of the calyx, one-celled, with a free central 

 placenta. Stamens inserted into the regular corolla opposite its lobes, wliich they equal in number. 



61. PRiMCLACEiE. Corolla rotate, hypocrateriform or campanulatc. Style and stigma single. Fruit capsular, with 



a free central placenta at the base of the cell. — Herbaceous plants. 



Group 7. Ovary free, one-celled, with a single ovule ; or 2-celled, with several o^Tiles attached to a tliick central placenta. 

 Stamens as many as the lobes of the regular corolla, or the nearly distinct petals. 



62. PLANTAGiNACEffi. Calyx 4-cleft, persistent. Corolla tubular or urn-shaped, membranaceous, persistent, 4-cleft. 



Stamens 4, inserted on the tube of the corolla. Capsule 2-cclled, opening transversely. — Mostly low 

 herbs, with small flowers in spikes. 



63. PLUMBAQiNACEa:. Calyx tubular, 5-toothed, plaited. Corolla 5-parted, or sometimes 5-petalled. Styles or 



stigmas 5. 



♦ A few Ericace^ are more or less polypetalous (See note, page 1). 



