XX 



SYNOPTICAL KEY. 



58. Styraceae, p. 470. Fruit fleshy, becoming dry, 3-valved, 1-seeded. Calyx truncate : pet- 



als 4 to 8, nearly distinct : stamens 10, monadelplious : style 1. Shrub, with alternate 

 entire leaves. 



59. Oleaceae, p. 471. Fruit a simple samara, usually 1 -celled and 1-seeded (or a 2-celled drupe 



or capsule). Flowers 4-merous, perfect or dioecious : petals often none : stamens usually 

 2 : style 1. Shrubs or trees, with opposite pinnate or simple leaves. 



++ ++ Carpels 2, united by their styles or stigmas, becoming distinct follicles with numerous comose 

 seeds. Perennial herbs, with milky juice, and opposite entire leaves : flowers 5-merous. 



60. Apocynaceas, p. 472. Corolla convolute in the bud. Anthers nearly free : pollen powdery. 



61. Asclepiadaceas, p. 474. Corolla and calyx nearly valvate. Anthers attached to the stig- 



ma : pollen in waxy masses. 



++ ++ ++ Fruit 1-celled : placental 2, parietal (sometimes united in the axis). 



62. Gentianaceas, p. 478. Capsule septicidal, few - many-seeded. Flowers 4 - 5-merous : style 



1 or none ; stigmas 1 or 2. Glabrous herbs, with simple and opposite or 3-foliolate and 

 alternate leaves : inflorescence not scorpioid. 



64. Hydrophyllaceas, p. 501. Capsule loculieidal, few - many-seeded. Flowers 5-merous : 



styles 2, usually more or less distinct. Herbs (Eriodictyon shrubby), often rough-hairy, 

 with alternate (rarely opposite) often compound leaves, and mostly scorpioid inflorescence. 



++ ++ ++ ++ Fruit 2 - 4-celled, with central placenta;. 



75. Plantaginaceae, p. 610. Capsule 2-celled 2 - few-seeded, cireumseissile. Flowers 4-me- 

 rous : stamens 2 or 4 : style 1 : corolla searious. Acaulescent herbs. 



66. Convolvulaceae, p. 532. Capsule 2-celled, 1 - 4-seeded, 2-valved or cireumseissile. Flow- 



ers mostly 5-merous : styles 1 or 2. Herbs, mostly twining, with alternate leaves, or 

 parasitic and without green herbage. 



65. BorraginaceEe, p. 518. Ovary 4-celled and mostly 4-lobed, maturing usually as many 



1-seeded nutlets. Flowers 5-merous : style single. Herbs, mostly rough-hairy, with 

 alternate (or the lower opposite) entire leaves, and scorpioid inflorescence. 



63. Polemoniaceae, p. 485. Capsule 3-celled, 3 - many-seeded, loculieidal. Flowers 5-merous : 



style 3-cleft. Herbs (rarely woody at base), with opposite or alternate simple or com- 

 pound leaves. 



67. Solanaceae, p. 537. Fruit a berry or capsule, 2-celled (rarely more), many- seeded. Flowers 



5-merous : style simple: corolla valvate or plaited in the bud. Herbs (rank-scented) 



or shrubs, with alternate simple or pinnate leaves. 

 Capsule didymous, mostly 2-parted, cireumseissile, 2 - 4-seeded. Stamens 2 or 3 : style 1. Nearly 



herbaceous, with mostly opposite sessile leaves. Menodoea in Oleaceai. 

 Capsule 2-celled, many-seeded. Flowers 5-merous : style single : corolla irregular, imbricate. 



Herbs with alternate leaves and racemose flowers. Vekbascum in Scrophulariacece. 

 Capsule imperfectly 3-eelled, several-seeded. Flowers 5-merous : stamens 10 or more : styles 3. 



Seeds thin, winged or comose. Small spinescent trees. Fovjquiera in Tamarisciiwce. 



* * Flowers irregular. Fertile stamens 4 and didynamous, sometimes 2. 



+- Fruit capsular, 1 - 2-celled : style 1. 



++ Seeds albuminous. 



6S. Scrophulariaceae, p. 546. Capsule 2-celled, with central placenta?, few — many-seeded. 

 Corolla imbricated. Herbs or sometimes w r oody, with alternate or opposite leaves. 



69. Orobanchaceae, p. 583. Capsule 1-celled, 2-valved, with 2-4 parietal placentae, many- 



seeded. Parasitic herbs, without green foliage : scales alternate. 



++ ++ Seeds without albumen. 



70. Lentibularieae, p. 586. Capsule 1-celled, with cental placenta?, bursting irregularly, many- 



seeded. Stamens 2 ; anthers 1-celled. Floating herbs, with capillary dissected leaves. 



71. Bignoniaceae, p. 586. Capsule (linear) 1 - 2-celled, 2-valved, with numerous w-inged and 



tutted seeds. Shrubs, with linear entire opposite or alternate leaves. 



72. Acanthaceae, p. 5S7. Capsule clavate, 2-celled with central placenta;, 4-seeded : seeds on 



hook-like processes of the placenta;. Stamens mostly 2. Herbs or shrubs ; leaves opposite. 



+- +- Fruit of 2 or 4 distinct or united 1-seeded nutlets. 



73. Labiatas, p. 589. Ovary 4-lobed around the 2-cleft style, forming as many distinct nutlets. 



Stamens 4 or 2. Mostly aromatic herbs or woody at base, with square stems, and 

 opposite simple leaves. 



74. Verbenaceae, p. (507. Ovary not lohed, 2 - 4-celled ; fruit splitting into as many nutlets. 



Stamens 4 : style 1. Herbs or shrubby, rarely aromatic ; leaves opposite or whorled. 



