SMITH AND ROSE—THE HAUYEAE AND GONGYLOCARPEAE. 297 
KEY TO THE GENERA. 
Herbaceous; leaves not crowded, petiolate, denticulate; 
disk glandular; ovary concrete with the stem and 
petiole, 2 or 3-celled, 2 or 3-ovuled; fruits remote. 1. GONGYLOCARPUS (p. 297). 
Fruticose; leaves crowded, subsessile, entire; ovary 
immersed in the stem, 2-celled, 2-ovuled; fruits 
approximate in the thickened stems............. 2. BurraGeEa (p. 297). 
1. GONGYLOCARPUS Schlecht. & Cham. Linnaea 5: 557. 1830. 
An annual herb, glabrous, the stem becoming reddish; leaves petiolate, ovate- 
lanceolate, denticulate-ciliate; flowers remote; calyx tube adnate to both branch 
and ‘petiole, the segments spreading, linear, cucullate; petals inserted on the glandu- 
lar disk of the calyx, obovate-cuneate, shorter than the calyx segments, entire; ovary 
2 or 3-celled, the style filiform and short, the ovules solitary in each cell; fruit con- 
crete with branch and petiole. 
Only a single species of Gongylocarpus (G. rubricaulis) has been described, which 
is extremely rare in collections. The type came from near Jalapa, Vera Cruz, Mexico, 
and the species has been reported also from the States of Jalisco and Chihuahua, 
widely separated localities. There is a possibility that more than one species is 
represented by this material. Owing to the weedy appearance of the plant and to 
its inconspicuous flowers and seemingly abnormal fruits, it is likely to be neglected 
by collectors. 
1. Gongylocarpus rubricaulis Schlecht. & Cham. Linnaea 5: 558. 1830. 
Stem 45 cm. long, erect; branches remote, shorter than the stem; leaves acuminate 
or acute, narrowed into the petiole, remotely and sharply denticulate, shortly or 
obsoletely ciliate, the cauline 6 cm. long and 2.5 cm. broad, petiole 1.25 em. long; 
calyx tube above ovary 4 to 10 mm. long; segments 4 mm. long; petals deciduous; 
stamens and style equaling or exceeding the calyx segments. 
Tyre LocaLity: Jalapa, Mexico. 
SPECIMENS EXAMINED: 
Mexico: Near Jalapa, Vera Cruz, Schiede & Deppe. Naolinco, Vera Cruz, 
August, 1912, C. A. Purpus 6155. Mountains near Chapala, Jalisco, Novem- 
ber 18, 1892, C. G. Pringle 5344. Southwestern Chihuahua, August to 
November, 1885, Dr. E. Palmer 34. 
2. BURRAGEA Donn. Smith & Rose, gen. nov. 
A perennial shrub; leaves alternate, closely set, subsessile, thickish, entire; sepals 4, 
in the bud free at the tip, highly colored, oblong, becoming reflexed, all similar; 
calyx tube very slender, much longer than the segments, partly closed at the apex 
by an annular disk; filaments 8, 4 longer; style slender; stigma capitate, at length 
bipartite; ovary imbedded in the branch, 2-celled; fruit somewhat diamorid-shaped, 
2-celled, 2-seeded, imbedded in the flowering shoot and tardily breaking away. 
Type species, Gaura fruticulosa Benth. 
This remarkable genus is dedicated to Commander Guy H. Burrage, United States 
Navy, who was in charge of the U. S. steamer Albatross during the spring of 1911, 
when Dr. Rose made his expedition to Lower California. We thus render a slight 
token of our appreciation of the facilities so richly supplied during this expedition. 
The genus Burragea is to be associated with Gongylocarpus, but in its bushy, 
perennial habit, large, showy flowers, and elongated flowering branches it must be 
regarded as quite distinct. Asin that genus the ovary is sunk in the flowering branch; 
but in Gongylocarpus the fruits are single and suggest little nuts, while in Burragea 
they represent a persistent collective fruit. 
