798 EUPHORBIACEAE 
26. TITHYMALOPSIS Kl. & Garcke. Perennial, mostly glabrous herbs 
often topped by an umbel. Leaf-blades entire. Involucres scattered or some- 
what clustered in an umbel-like N ORA eaeh with d M Lal 
Capsule smooth. eed punctate. bou species, Nor can.— 
EUPHORBIAS.—Some of the species, T. corollata and T. I NM are used 
medicinally. 
I 
ie e) 
Leaves exceedingly numerous, approximate or imbricate. 1. T. polyphylla. 
Leaves less numerous, never imbricate. 
Bun e or prostrate: leaf-blades Dru 2. T. Ipe annee 
ranches erect or ascending: leaf-blades thin 3. T. graci 
Glands of the involucre with conspicuous pu ap- 
4. T. eriogonoides. 
T vi ees aa to scales: Draci Holiaceous. 9. T. mercurialina. 
Stem-leaves with normally expanded blade 
Inflo RET of scattered long- -Dedüncled invo- 
Involucres 2-4 mm. across the appenda 
em-leaves with linear blades, fugacious. 6. T. Curtisii. 
Stem-leaves with elliptic or  lanceolate 
blades, persistent. T. T. ex 
Involucres 6-1 mm. across the appendages. 8. T.z a 
Inflorescence S into terminal cymes or 
cymose cluster 
Mo blades ,manifestiy petioled, the petioles 
ver 2 m lon 9. T. apocynifolia. 
Leaf-blades e ‘or nearly so, the petioles, if 
esent, less than 1 mm. lon 
Involuer res 3.0 mm. across the ‘appendages 
narrow 10. T. discoidalis. 
E accom mm. across the app endages. 
A ppengases about as long as the invo- 
lu 11. T. olivacea. 
Appendages much longer than the in- 
Mee longer than wide: leaf- 
. blades cu ca 12. T. corollata. 
Appendages lon 
wider: leaf-blades relatively Broad. 18. T. paniculata. 
T. polyphylla (Engelm.) Small. Plant 0.5-2.5 dm tall, the stems T 
e tuf jn d leafy: leaf- wc linear or linear- -spatulate, 0-10 m 
: nd- 
K 
. bro 
out 2.5 ed long, white A Pinelands, i 
Fla.—A]l year 
T. Ipecacuanhae (L.) Small. Plant 
ry acid sand, e 
vegetation is too sparse to carry fire, Coastal 
Plain and occasionally adj. provin uem Fla. 
to Tenn, Ind., and Conn cn —fal 
