xxviii SYNOPSIS OF NATURAL ORDERS 



B. CALYCIFLOR^. 



Calyx gamosepalous, often adnate to ovary. Petals inserted on calyx, or on 

 disk lining calyx-tube. 



44. Connaracece, p. 210. L. alternate, imparipinnate or 1-foliolate, leaflets entire, 

 coriaceous, stipules 0. Fl. usually bisexual and regular, pentamerous, petals 

 linear-oblong, stamens 10, the epipetalous stamens generally shorter and often sterile. 

 Carpels 5, free, rrfostly hairy, ovules 2, collateral. Fruiting carpel one, 2-valved. 



45. LeguminoscB, p. 214. L. stipulate, as a rule alternate and compound. Fl. 

 bisexual, petals 5, in the majority of genera zygomorphic, stamens 10 or oo. Carpel 

 one, free, ovules usually numerous, attached to the inner suture. Fr. a 1-celled pod, 

 endosperm generally 0. 



46. Rosacece, p. 277. L. stipulate, usually alternate. Fl. pentamerous, as a rule 

 regular and bisexual, stamens usually numerous. Carpels mostly distinct, often 

 adnate to and enclosed in the calyx-tube. Albumen or scanty. 



47. Saxifragacea-, p. 296. L. simple. Fl. regular, 4- or 5-merous, calyx free or 

 adnate to ovary, stamens free, as many as petals, twice the number or numerous. 

 Carpels 2 or numerous, usually connate, ovules numerous. Seeds small, embryo minute, 

 in copious albumen. 



48. Hamamelidacece, p. 300. L. alternate, stipules usually deciduous. Fl. in compact 

 heads or spikes, usually bracteate, calyx-tube more or less adnate to ovary, ovary 

 2-celled, styles 2, usually persistent. Testa shining. 



49. Rhizoplioracea>, p. 302. L. opposite, usually coriaceous and entire, scars of 

 petioles niostty prominent, stipules iuterpetiolar, deciduous. Fl. regular, generally 

 bisexual, calyx more or less adnate to ovary, limb 4-14-lobed, lobes as a rule persistent, 

 petals as many as sepals, stamens usually twice the number of petals. Fr. coriaceous, 

 usually 1-seeded. 



50. C'ombretacece, p. 306. L. simple, entire, stipules 0. Fl. usually bisexual and 

 regular, calyx-tube adnate to ovary and produced beyond it, segments 4-5, valvate, 

 petals often wanting. Stamens as many as calyx-segments or twice their number, 

 perigynous. Fr. generally angled or winged. 



51. Myrtacem, p. 316. L. simple, generally quite entire, either opposite with trans- 

 lucent glands or alternate without glands. Stipules 0. Fl. regular, generally 

 bisexual. Ovary enclosed in and generally adnate to calyx-tube. Stamens oo, inserted 

 with the petals in the mouth of calyx-tube. 



52. Melastomacea;, p. 332. L. opposite, entire or nearly so, usually with 3-7 basal 

 nerves, no translucent glands, stipules 0. Fl. regular, bisexual, calyx-tube entirely or 

 partially adnate to ovary, segments 4 or 5, deciduous. Stamens twice the number of 

 calyx-segments, inserted with petals on the edge of calyx-tube, connective often large. 



53. Lythracea, p. 337. L. generally opposite, simple, entire. Calyx cup-shaped, 

 persistent, segments valvate, often with intermediate teeth, petals when present 

 imbricate and crumpled in bud. Ovary as a rule superior. 



54. Samydacece, p. 342. L. alternate, distichous, stipules small. Fl. regular, incon- 

 spicuous, generally bisexual. Calyx persistent, tube short. Capsule 2^-valved, 

 seeds numerous. 



55. Passifloracew, p. 345. L. alternate, usually lobed. Fl. regular, unisexual in 

 Papaya, bisexual in Passiflora. 



56. DatiscacecE, p. 346. (Tetrameles.) L. deciduous, petiolate, broadly ovate. Fl. 

 dioecious, S calyx deeply 4-lobed, petals 0, stamens 4. Capsule crowned by the 

 persistent calyx-segments, the valves terminating in the persistent styles. 



57. Cactacece, p. 346. (Opuntia.) Stems and branches succulent, prickly. Fl. 

 regular, bisexual, solitary, calyx-tube adnate to ovary, petals numerous, imbricate, 

 stamens oo. Fr. fleshy, seeds numerous. 



58. Araliacece, p. 347. L. alternate, simple or compound. FL- regular, usually 

 pentamerous and umbellate. Calyx adnate to ovary, usually entire, petals caducous. 

 Stamens inserted outside the epigynous disk, anthers didymous. 



59. Cornacece, p. 354. L. entire, stipules 0. Fl. regular, calyx-tube adnate to ovary, 

 limb persistent, segments small, petals 4 or 5, inserted with stamens round an 

 epigynous disk. Fr. drupaceous. 



II. GAMOPETALjE. 



Flowers in the majority of species bisexual, as a rule with both calyx and 

 corolla, corolla gamopetakms. 



60. Caprifoliacea, p. 357. L. opposite, stipules usually 0. Fl. bisexual, calyx-tube 

 adnate to ovary, limb 3-5-toothed, corolla often zygomorphic, lobes 5. Stamens 

 inserted on the corolla-tube. 



