FOUR-O'CLOCK FAMILY 69 



2. Leaves below the flowers united and calyx-like 



a. Stamens 5 ; involucre bell-shaped ; fruit not 



ribbed MIRABILIS 



b. Stamens 3 ; involucre saucer-shaped 



(1) Fruit smooth, not ribbed ALLIONIELLA 



(2) Fruit hairy, ribbed or warted ALLIONIA 



ABRONIA Jussieu 1774 ABRONIA 



(Gr. abros, pretty, from the flowers) 



PL 9, fig. 15-16. 



Sepals 5, united into an elongated, tubular or funnelform calyx, white 

 to pink, petals none, stamens 3-5, ovary 1-celled, style slender, fruit dry, 1-5 

 winged, with netted veins; flowers in many-flowered involucres, solitary or 

 clustered on long axillary stalks ; leaves opposite, petioled, thick, entire ; 

 annual or perennial. 



1. Flowers white or greenish-white; fruits narrowly 



winged; perennials 



a. Flowers white, 2-3 cm. long; wings 2-5 A.frdgrans 



b. Flowers greenish, 1.5-2 cm. long; wings most- 



ly 5 A. elliptica 



2. Flowers pinkish to reddish; fruits broadly 



winged; annuals 



a. Flowers 4-5 mm. wide, 1.5-2 cm. long, red- 



dish-green A. micrdntha 



b. Flowers 8-10 mm. wide, 3-4 cm. long, pinkish A. cycloptera 



ALLIONIA Loefling 1788 ALLIONIA 



(Named for Allioni, an Italian botanist) 



PL 8, fig. 1. 



Sepals 5 united into a bell-shaped calyx, corolla-like, rose-purple, 

 petals none, stamens 3-5, ovary 1-celled, fruit 1-seeded, club-shaped, 

 strongly ribbed, fine-hairy; flowers in loose terminal panicles, involucre of 

 3-5 partially united bracts, 3-5-flowered, becoming enlarged and net-veined 

 after flowering; leaves opposite. 

 1. Involucre 5-lobed ; fruit wingless 



a. Stem with long shaggy hairs A. hirsuta 



b. Stem smooth, at least not shaggy 



( 1 ) Leaves linear to lanceolate A. linedris 



