CISTACEAE 795 
3. Piriqueta tomentósa H.B.K.  Pubescent with stellate tomentum. Stems erect or 
decumbent, 2-4 dm. tall, simple or branched, leafy : leaf-blades leathery, oval, oblong or 
rarely narrowly oblong-lanceolate, 1-4 cm. long, obtuse, slightly crenate-serrate, sessile or 
short-petioled below : calyx turbinate or campanulate-turbinate; lobes lanceolate, 5-8 mm. 
long, acute, slightly spreading: petals yellow, obovate, about 1.5 em. long : capsules sub- 
globose, 5-6 mm. in diameter, minutely pubescent : seeds fully 2 mm. long. 
In pine lands, peninsular Florida. 
4. Piriqueta Caroliniàna (Walt.) Urban.  Pubescent with fulvous hirsute hairs and 
stellate tomentum. Stems erect, 1-4 dm. tall, simple or sparingly branched : leaf-blades 
obovate, oblong or cuneate, lanceolate, or rarely oval, 1-7 cm. long, obtuse, repand or 
crenate-serrate, sessile or with short petioles: pedicels shorter than the peduncles: calyx 
turbinate ; lobes lanceolate, 8-10 mm. long, acute, slightly spreading: petals yellow, obo- 
vate, 1.5-2 cm. long: capsules subglobose, 5-7 mm. in diameter, minutely pubescent : 
seeds fully 2 mm. long. 
In pine lands, North Carolina to Florida and Alabama. 
2. TURNERA L. 
Shrubs or shrubby plants, with glabrous or pubescent foliage. Leaves few, alternate : 
blades entire, toothed or pinnatifid. Flowers solitary in the axils, or sometimes in clus- 
ters or racemes, with or without bractlets. Sepals 5, more or less united, imbricated. 
Petals 5, usually yellow, convolute, inserted at the throat of the calyx-tube. Stamens 5, 
inserted near the petals. Filaments somewhat flattened, distinct. Anthers 2-celled. 
Stigmas 3, brush-like. Capsule barely elongated, 3-valved. Seeds curved, with a pitted 
or rough testa. 
1. Turnera aphrodisiaca Ward. A low diffuse shrub, with strigose foliage, or 
glabrate. Leaves approximate or clustered on the branchlets; blades spatulate or oblong- 
spatulate, leathery, 1-2.5 cm. long, acute, coarsely few-toothed, narrowed into slender 
petioles, the nerves prominent beneath, impressed above: calyx 4 mm. long, sessile, tubu, 
lar; lobes oblong or ovate-oblong, shorter than the tube, tips recurving: petals yellow- 
6-8 mm. long, narrowly cuneate: capsules ovoid, 4-6 mm. long. 
In dry soil, southern Texas and adjacent Mexico. 
FAMILY 9. BIXACEAE Reichenb. BrxaA FAMILY. 
Shrubs or small trees. Leaves alternate: blades simple, toothed, lobed or 
rarely entire. Flowers perfect, solitary or several to many and variously dis- 
posed. Calyx of 4-5 usually imbricated sepals. Corolla wanting, or of as many 
petals as the sepals, deciduous. Androecium of numerous or rarely few stamens. 
Anthers opening by apical chinks. Gynoecium of 2-several united carpels. 
Ovary superior, 1-celled, with 2-several parietal placentae which are sometimes 
well intruded. Styles as many as the placentae, but united. Ovules 2-many on 
each placenta. Fruit a valvate capsule, the valves bearing the placentae. 
Seeds numerous, often hairy. 
1. AMOREUXIA Mog & Sess. 
Branching shrubs. Leaves alternate: blades palmately lobed. Flowers in terminal 
panicles. Sepals 5, deciduous. Corolla showy. Petals 5. Stamens numerous : anthers 
narrow. Ovary 2-celled by the meeting of the placentae. Ovules numerous. Capsule 
loculicidally 3-valved, the valves leathery, separating from the endocarp and scarious 
partitions. Seeds numerous, smooth, the bony testa surrounded with a membranous coat. 
1. Amoreuxia Wrightii A. Gray. Stems solitary or several from a stout base, 2-5 
dm. tall : leaf-blades 2.5-5 cm. broad, deeply 5-7-lobed, the lobes mainly obovate, re ularly 
toothed : sepals 1.5-2 cm. long: petals twice as long as the sepals, orange above the brown- 
ish base : capsules ovoid to oblong-ovoid, mainly 4-5 cm. long : seeds obovoid. 
On dry or stony hills, Texas to Arizona and Central America. Spring to fall. 
FAMILY 10. CISTÀCEAE Lindl. Rock-RosE FAMILY. 
Shrubs or low woody herbs, with erect or spreading stems. Leaves alternate 
or opposite : blades simple. Flowers regular, generally perfect, solitary, racemose, 
