TAMARICACEAE, 137 
AscyruM. St. Peter’s-wort. 
Small deciduous shrubs or half-shrubs with flaking bark; 
slender 2-edged twigs; small rounded dark excavated pith; op- 
posite low small crescent-shaped leaf-scars with 1 bundle-trace; 
no stipule-scars; entire pellucid-dotted nearly sessile leaves; 
moderate yellow nearly solitary 4-merous perfect polypetalous 
flowers; and I-celled ovoid or compressed small capsules. 
Leaves narrowed at base. (St. Andrew’s Cross) A. hypericoides. 
Leaves broad and rather clasping at base. A. stans. 
Family TAMARICACEAE. Tamarisk Family. 
A very small family of little use aside from landscape 
planting. 
TAMARIX. Tamarisk. Salt Cedar. 
Deciduous shrubs or small trees with reddish wood with 
small ducts, sometimes larger and more crowded in spring and 
smaller and tangentially seriate in autumn, and rather fine 
medullary rays; very slender terete green twigs; relatively large 
rounded continuous pale pith; persistent somewhat alternate 
raised leaf-bases; no stipule-scars; small round buds; minute 
scale-like acute blue-green leaves largely deciduous with the 
branched foliar shoots that bear them; very small polypetalous 
perfect rosy flowers in spike-like racemes; and small many- 
seeded capsules. 
Petals 5. T. gallica. 
Petals 4. T. parviflora. 
Family CISTACEAE. Rock Rose Family. 
A small and unimportant family, chiefly of herbs, some of 
them bright-flowered. 
HupsoniA. Beach Heather. 
Low densely branched heath-like evergreen shrubs with 
slender roundish twigs; usually alternate scale-like long-per- 
sistent leaves; small yellow perfect flowers from the upper 
axils; and small 1-celled I- or 2-seeded capsules. 
Leaves spreading, rather green: flowers stalked. H. ericoides. 
Leaves appressed, very gray: flowers subsessile. H. tomentosa. 
