38 K3BEDING8 OP Till: AMKRIOAH ACADEMY. 



fascia basi calloBis, pappi setifi ca. 22 aequalibus tenuibua laete albia •"• 

 nun. Longis \ix scabratis. — <m mountains, Saltillo, Mexico, alt 2135 

 in.. .". October, 1905, C. G. Pringle, do. 10,082 type, inhb. Gray . 



LAGASCEA HELIANTHIFOLIA HBK., var. adenocaulis Robinson, 

 n. var., oanle (3-4 dl alto) usque ail summam partem dense irlaiulu- 

 loso-pnberulo uec piloso; foliis longiuscule oblanceolato-oblongia at- 

 tennatis supra scabria subtus paulo pallidioribus mollitei tomentellis. — 

 Hedgerows, rruapan, Michoacan, Mexico, '24 January, 1907, C. G. 

 Pringle, no. 13,907 (type, in hb. Gray . A transition between tin's 

 variety ami the typical spreading pilose form is shown by L C. Smith's 

 nn. mi; i from the mountains of San Juan del ESstado, Oaxaca. 



Lagascea mi. i \n thifoli \ HBK., var. levior Robinson, n. comb. 

 .v ' helianthifolia Cass., var. levior Robinson, Proc. Am. Acad. 

 .wwi. Ids | L901). 



Lagascea helianthifolia HBK., var. suavcolens Robinson, d. 

 comb. />. suaveolens HBK. Nov. Gen. etSpec. iv. 25 L820). Nocca 

 //. //<i//f/iij'<>/ ; </ Cass., var. suaveolens Robinson, I.e. 



Lagascea Palmeri Robinson, n. comb. Nocca Palmeri Robinson, 

 1. c. 171 (1901). 



Lagascea Pringlei Robinson, n. comb. Nocca Pringlei Robinson, 

 1. c. 169 I L901). 



Guardiola Palmeri Robinson, n. sp., glaberrima atroviridis com- 

 pacte ramosa foliosa 3.5 dm. alta basi lignescens; caulibus teretibua 

 striatulis gracilibus, ramis oppositis ascendentibus ; foliis oppositis 

 petiolatis ovatia vel subreniformibus integerrimis vel plus minusve 

 repandis nee angulatis nee dentatis 1.5—3 cm. Longis l._ 2.8 cm. latis 

 utrinque leviter reticulato-venosis subtus vix pallidioribus apice rotun- 

 datia basi late cordatis, petiolo 5-7 mm. longo; intlorescentiis in api- 

 cibus ramorum folioso-bracteosis 1-3-capitulatis ; ])edicellis 3—7 mm. 

 longis ; capitulia 12-14 mm. longis 6-8 mm. diametro ; involucri sub- 

 cylindrati fasco viridis 1 cm. longi 4-5 mm. crassi squamis oblongia 

 obtusiusculis striatulis leviter convexis nullo niodo carinatis ; radiis 

 ca. :; ; corollac tubo gracili glaherrimo "• mm. longo, liglila elliptica 

 1 mm. loiiga _'.•_' mm. lata hidentata alba ; acbaeniis immaturia COn- 



cavo convexis obovato-oblongis 4.6 mm. longis glabris ; floribus disci ca. 



LO gracillimis, tub rollae ca. '.» mm. longo, faucibus brevissimis 



campanulati8, lobis limbi •"> lineari-oblongia obtusis recurvatia all 

 filamentds albia tomentosi8 quam antherae virides multo brevioribus. — 

 Outer circle "( mesas, Otinapa, Durango, Mexico, alt. about . *245<» m., 

 ■_'.") .Inly-.". August, 1906, Dr. E. /'>i////>/\ no. 877 (type, in lib. Gray). 

 This species in its few scattered heads, broad clearly petiolate leaves, 

 and unkeeled involucral Bcales, closely approaches (i. I!<>.<<i Robinson; 



