* Vor. II.] SUMAC FAMILY. 389 
1. Cotinus cotinoides (Nutt.) Britton. Wild or American Smoke-tree. 
Chittam-wood. (Fig. 2354.) 
Rhus cotinoides Nutt.; T. & G. Fl. N. A. 1: 217. 
As synonym, 1838. 
Cotinus Americanus Nutt. Sylva, 3: p/. 87. 1849. 
Cotinus cotinoides Britton, Mem. Torr. Club, 5: 
216. 1894. 
A small widely branched tree, with maxi- 
mum height of about 4o° and trunk diameter 
of 15’. Leaves oval or slightly obovate, thin, 
glabrous or sparingly pubescent beneath, 3/— 
6’ long, 114/-2’ wide, obtuse at the apex, nar- 
rowed and commonly acute or acutish at 
the base, the blade slightly decurrent on the 
petiole; flowers 1//-1}4’’ broad, green, borne 
in loose large terminal panicles; pedicels 
elongating to 1/-14’ and becoming very plu- 
mose in fruit; drupe reticulate-veined, 2’’ long. 
Missouri and the Indian Territory, east to Ten- 
nessee and Alabama. Wood soft, orange-yellow, 
yielding a rich dye; weight per cubic foot 4o lbs. 
Very nearly related to the European C. Cotinus, 
which differs in its smaller coriaceous leaves, 
more pubescent, mostly rounded and obtuse at 
base. April-May. 
Family 63. CYRILLACEAE Lindl. Veg. King. 445. 1847. 
CYRILLA FAMILY. 
Glabrous shrubs, or small trees, with simple entire thick alternate exstipu- 
late leaves, long-persistent or evergreen, and small regular perfect bracted race- 
mose flowers. Sepals 4-8 (mostly 5), persistent. Petals the same number as the 
sepals, hypogynous, distinct, or slightly united by their bases, deciduous. 
Stamens 4-10, in 1 or 2 series, distinct, hypogynous; anthers introrse, 2-celled, 
the sacs longitudinally dehiscent. Ovary 2-5-celled; ovules 1-4 in each cavity, 
anatropous, pendulous; style short or none; stigma very small, or 2-3-lobed. 
Fruit dry, small, 1-5-seeded. Seeds oblong or spindle-shaped; endosperm fleshy ; 
embryo central, cylindric. 
Three genera and 6 known species, natives of America. 
1. CYRILLA Garden; L. Mant. 1:5. 1767. 
Racemes clustered at the ends of twigs of the preceding season. Sepals 5, firm, acute, 
shorter than the petals. Petals 5, white, acute, spreading. Stamens 5, opposite the sepals, 
the filaments subulate, the anthers oval. Ovary ovoid, sessile, mostly 2-celled, sometimes 
3-celled; ovules 2-4 in each cavity; style short, thick, 2-3-lobed. Fruit ovoid, 2-3-seeded, 
the pericarp spongy. [In honor of Domenico in 
Cyrillo, professor of medicine at Naples. ] / 
Two species, natives of southeastern North America. 
1. Cyrilla racemiflora Walt. Southern 
Leatherwood or Ironwood. (Fig. 2355.) 
Cyrilla racemiflora Walt. Fl. Car. 103. 1788. 
A shrub or small tree, sometimes 35° high and 
the trunk 15’ in diameter, the bark at the base 
spongy. Leaves oblanceolate, obovate or oval, 
short-petioled, reticulate-veined and the midvein 
rather prominent beneath, obtuse or acute at the 
apex, cuneate-narrowed at the base, 2/-4’ long, 
3//-1’ wide; racemes narrow, 2/-6’ long, bearing 
the very numerous small white flowers nearly to 
the base; pedicels 1//-2’’ long, somewhat longer 
than the bracts, or shorter; fruit about 1’’ long. 
Along streams and swamps, southern Virginia to 
Florida and Texas, mostly near the coast. Also in the 
West Indies and South America. May-July. 
