274 PROCEEDINGS OP THE AMERICAN ACADEMY 



Epilobium Madrense. Glabrous throughout and very glaucous; 

 stems ascending from very slender rooting rhizomes, a span high or 

 less, slender and somewhat flexuous, simple, terete or nearly so : leaves 

 thickish, opposite (the floral alternate), petiolate, entire or obsoletely 

 toothed, narrowly lanceolate or oblong-lanceolate, acutish, 6 to 12 lines 

 long : flowers long-pedicellate ; petals purple, 2 lines long, the lobes 

 of the calyx scarcely half as long: capsule 1 to 1-|- inches long: seeds 

 oblong, obtuse, papillose. — With the habit of the E. origanifolium 

 group ; apparently not referrible to any of Haussknecht's species. In 

 the Sierra Madre, Chihuahua; C. G. Pringle (n. 1245), 1887. 



Sicyos (Heterosicyos) minimus. Small and very slender (stems 

 2 feet long or less), glabrous or nearly so: tendrils simple; leaves 

 thin, shortly petiolate, ternately digitate, the lateral leaflets lobed on 

 the lower side, the middle one narrowly lanceolate to linear, 1J inches 

 long or less, entire or sparingly toothed : male and female flowers in 

 the same axils, minute, the male inflorescence few-flowered and much 

 shorter than the petioles, the female flowers solitary or in pairs: fruit 

 small (3 lines long), membranous, compressed, strongly gibbous and 

 subtriangular, the ventral side straight, shortly beaked, sparingly cov- 

 ered with very short curved bristles : seed inverted, pendulous upon a 

 funicle as long as the seed, ovate, somewhat rugose-tuberculate. — In 

 canons of the Sierra Madre, Chihuahua; C. G. Pringle (n. 1576), 

 Oct., 1887. Very peculiar in its thin pericarp, inverted long-funicular 

 seed, and simple tendrils, and deserving at least sectional rank in the 

 genus. 



Eryngium Madrense. Erect, 2 feet high or more, branching 

 above: lower leaves unknown; cauline bipinnatifid, 2 or 3 inches 

 long, the rhachis and distant segments linear-subulate and spinulose ; 

 the uppermost subdigitately parted, the segments entire or toothed ; 

 involucral bracts about 8, linear-subulate, spinulose, entire or with 1 

 or 2 teeth, 4 to 8 lines long : head oblong (4 or 5 lines long by 2 or 3 

 broad), the axis prolonged and 2-5-cleft at top ; floral bracts flattened- 

 filiform, about equalling the flowers : fruit about i line long, ovate, 

 crowned with the purple calyx and covered with white tubercles in 

 about 12 rows. — In ponds on the plains at the base of the Sierra 

 Madre, Chihuahua; C. G. Pringle (n. 1531), Oct., 1887. 



Bowlesia palmata, Ruiz & Pavon. Under cliffs in canons of 

 the Sierra Madre, Chihuahua; G G. Pringle (n. 1248), Oct., 1887. 

 Apparently agreeing in every respect with the descriptions of this 

 Peruvian species, and with specimens collected in the Andes by Mr. 

 Ball. 



