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House: NortH AMERICAN CONVOLVULACEAE 145 
Reinwardtia sericea Spreng. Syst. 1: 863. 1825. 
Prevostea sericea Choisy, Ann. Sci. Nat. 4: 496. 1825. 
Distinguished from C. velutinus by its leaf-blades sericeous- 
pubescent beneath, the flower clusters ample and terminating leafy 
branches, and the colored outer sepals. 
TYPE LOCALITY: ‘‘Crescit in Regno Novae Granatae, juxta 
urbem Mariquita, alt. 400 hex.” 
DisTRIBUTION : Northern South America. 
3. Calycobolus Pringlei sp. nov. 
Twining, 5 meters high, herbaceous above, woody below ; glab- 
rous except for some minute pubescence on the pedicels and at the 
base of the sepals ; leaf-blades broadly lanceolate or oblong-lance- 
olate, acute, obtuse or rounded at the base, 4-8 cm. long, glab- 
rous, texture somewhat rough and thick ; petioles short, 5-10 mm. 
long ; flowering branches one or more in the axils of the leaves, 
branching, many-flowered, leafy ; pedicels 7-10 mm. long; the 
three outer sepals elliptical, rounded at the apex, 8-10 mm. long, 
the two inner ones 3 mm. long or less; corolla 1.5 cm. long and 
as broad, slightly pubescent in bud, becoming glabrous, deeply 
5-lobed, lobes obovate, retuse ; anthers short-sagittate, blunt. 
Mexico : On limestone hills, Yantepec, Morelos, alt. 4000 feet, 
C. G. Pringle 8751, November 21, 1903 (type, sheet no. 460794 
in the Herbarium of the United States National Museum). Puebla, 
between Huajuapam, Oaxaca and Retlatzingo, &. W. Nelson 1957, 
November 19, 1894, alt. 4800-6500 feet. 
The South American species in addition to C. sericeus, above 
mentioned, are as follows: 
Calycobolus amazonicus (Choisy) 
Prevostea amazonica Choisy, in DC. Prodr. 9: 437. 1845. 
Calycobolus ferrugineus (Choisy) 
Prevostea ferruginea Choisy, Ann. Sci. Nat. 4: 498. 182 5. 
Calycobolus glaber (H.B.K.) 
Dufourea glabra H.B.K. Nov. Gen. & Sp. 3: 114. 1818. 
Calycobolus pulchellus Willd.; R. & S. Syst. 5: 4- 1819. 
Reinwardtia glabra Spreng. Syst. 1: 863. 1825. 
Prevostea glabra Choisy, Ann. Sci. Nat. 4: 496. 1825. 
