218 CONVOLVULACE^:. Evolvulus. 



an inch long, equalled by the almost glabrous filaments and the moderately 2-oleft style. 

 Convolvulus Pickerinfjil,1on.; M. A. Curtis in Bost. Jour. Nat. Hist. i. 129; Gray, Man. 

 ed. 1, 349. Sttjlisma evolvuloid.es, var. angustifolia, Clioisy in DC. 1. c. S. Pickeringii, Gray, 

 Man. ed. 2, 335 ; Chapm. 1. c. Bonaniia Pickeringii, Gray, Man. ed. 5, 376. Dry pine 

 barrens and prairies, New Jersey to North Carolina ; Louisiana and Texas ; also W. 

 Illinois, H. N. Patterson. 



6. EVOLVULUS, L. (From evolco, I unroll, the name a counterpart of 

 Convolvulus.) Low and small herbaceous or suft'rutescent plants (of the warm 

 parts of the world, largely American) ; with erect or commonly diffuse or pros- 

 trate stems, not twining, entire leaves, one-few-flowered and sometimes paniculate 

 peduncles, and small flowers, produced in summer and autumn. Corolla in ours 

 almost rotate, white, rose-colored, or blue. 



E. MUHLENBERGII, Spreng. Pugill. i. 27, habitat not given, is something not identified, and 

 by "peduncles opposite the leaves" not of this order. 



* Peduncles filiform, 1-3-flowered, mostly longer than the leaves: either perennials or annuals ? 



E. alsinoid.es, L. Villous or 'hirsute, commonly with some long and spreading hairs: 

 stems slender, diffuse or decumbent, a foot or two long : leaves from oval or oblong to 

 lanceolate, somewhat petioled : pedicels at length nodding or refracted on the peduncle : 

 corolla about 3 lines broad. (Founded on the Asiatic plant, Burm. Zeyl. ii t. 6, fig. 1, & 

 t. 9, fig. 1, and Hheede, Malab. xi. t. 64, apparently also indigenous to the New World, 

 and diverse.) E. alsinoides, var. hirticaulis, Torr. Bot. Mex. Bound. 150. E. diffusus, Chapm. 

 Fl. 345. S. Florida and Texas, Blodgett, Berlandicr, \Vriijht, &c. (All trop. regions ?) 



E. linifollUS, L. Too like narrow-leaved and slender forms of the preceding, but the fine 

 sericeous pubescence all appressed : leaves small and linear-lanceolate, nearly sessile : blue 

 corolla only 2 or 3 lines in diameter. Spec. ed. 2, i 392, founded on Convolvulus herbaceits, 

 erectus, &c., P. Browne, Jam. 152, 1. 10, fig. 2, not Choisy in DC. S. Arizona, near Tucson, 

 Greene. (Mex., W. Ind., c.) 



E. Arizonicus. Minutely sericeous or cinereous with fine appressed pubescence, pani- 

 culately branched : stems very slender, erect and diffuse or decumbent-spreading : leaves 

 lanceolate or linear-lanceolate, subsessile or short-petioled (6 to 12 lines long, 2 or 3 wide) ; 

 the upper reduced to bracts so that the inflorescence becomes paniculate: peduncles mostly 

 1-flowered : sepals ovate-lanceolate, acute : corolla blue or bluish, half inch in diameter 

 when expanded. E. alsinoides, Torr. 1. c., partly. E. holosericeus, var. obtusatus, Torr. 1. c., 

 partly, excl. syn. Sandy or dry prairies, Arizona and New Mexico ; a common species 

 of the region. (Adjacent Mex.) 



E. mucronatus, SwartZ. Glabrate and green, or when young sparsely villous-seri- 

 ceous with appressed pubescence : stems decumbent or prostrate : leaves thickish, oval or 

 round-obovate (about half inch long), short-petioled, the obtuse or retuse apex mucronate : 

 peduncles barely surpassing or some shorter than the leaves : corolla pale blue or white, 

 4 lines in diameter. Griseb. Fl. W. Ind. 475 ; Meissn. 1. c. 345. E. glabriusculits, Clioisy, 

 Conv. 156, & in DC. 1. c. 448 ; Chapm. 1. c. South Florida, Blodrjett. Perhaps E. nuinmu- 

 larius, Nutt. Gen. i. 174 (not L.), on the Mississippi below New Orleans. (Trop. Amer.) 



# * Peduncles or rather pedicels (hihracteolate at base, solitary and one-flowered) short, usually 

 verv short; the lower sometimes half the length of the leaf, recurved in fruit: very low peren- 

 nials. 



Upper surface of the leaves green and glabrous, otherwise sericeous : corolla white or pale 

 blue. 



E. sericeus, Swartz. Steins slender or filiform, a span or two high : leaves subsessile, 

 lanceolate or linear-lanceolate (6 to 10 lines long), erect or ascending, mucronate-acuminate 

 or acute; silky pubescence fine and close-pressed, sometimes short, whitish or fulvous: 

 sepals ovate-lanceolate : corolla 3 or 4 lines in diameter. Prodr. 55, & Fl. Ind. Occ. i. 576 ; 

 Nutt. Gen. i. 174 ; Chapm. 1. c. ; Choisy, 1. c. ; Meissn. in Fl. Bras. vii. 353. Convolvulus 

 erectus, herbaceus, &c., P. Browne, Jam. 153, t. 10, fig. 3. E. holosericeus, Torr. 1. c. partly, 

 not HBK. Pine woods, &c., Florida to Louisiana, Texas, and Arizona. The western 

 forms with looser and longer hairiness. (Mex., W. Ind., S. Amer.) 



