~ 
PN 
38 PROCEEDINGS OF THE AMERICAN ACADEMY. 
fuscis basi callosis, pappi setis ca. 22 aequalibus tenuibus laete albis 5 
mm. longis vix scabratis.— On mountains, Saltillo, Mexico, alt. 2135 
m., 5 October, 1905, C. G. Pringle, no. 10,082 (type, in hb. Gray). 
LaGASCEA HELIANTHIFOLIA HBK., var. adenocaulis Robinson, 
n. var., caule (3-4 m. alto) usque ad summam partem dense glandu- 
loso-puberulo nec piloso ; foliis longiuscule oblanceolato-oblongis at- 
tenuatis supra scabris subtus paulo pallidioribus molliter tomentellis, — 
Hedgerows, Uruapan, Michoacan, Mexico, 24 January, 1907, C. G. 
Pringle, no. 13,907 (type, in hb. Gray). A transition between this 
variety and the typical spreading-pilose form is shown by L. C. Smith’s 
no. 964 from the mountains of San Juan del Estado, Oaxaca. 
LaGAScEA HELIANTHIFOLIA HBK., var. levior Robinson, n. comb. 
Nocca helianthifolia Cass., var. levior Robinson, Proc. Am. Acad. 
xxxvi. 468 (1901). 
LaGASCEA HELIANTHIFOLIA HBK., var. suaveolens Robinson, n. 
+ 
comb. L. suaveolens HBK. Nov. Gen. et Spec. iv. 25 (1820). occa 
helianthifolia Cass., var. suaveolens Robinson, |. ec. 
Lagascea Palmeri Robinson, n. comb. Nocea Palmeri Robinson, 
1. @. 471 (1901). 
> Lagascea Pringlei Robinson, n. comb. Nocca Pringlei Robinson, 
l. ¢. 469 (1901). 
Guardiola Palmeri Robinson, n. sp., glaberrima atroviridis com- 
pacte ramosa foliosa 3.5 dm. alta basi lignescens ; caulibus teretibus 
striatulis gracilibus, ramis oppositis ascendentibus ; foliis oppositis 
petiolatis ovatis vel subreniformibus integerrimis vel plus minusve 
repandis nec angulatis nec dentatis 1.5-3 em. longis 1.2-2.8 cm. latis 
utrinque leviter reticulato-venosis subtus vix pallidioribus apice rotun- 
datis basi late cordatis, petiolo 5-7 mm. longo ; inflorescentiis in apl- 
cibus ramorum folioso-bracteosis 1-3-capitulatis ; pedicellis 3-7 mm. 
longis ; capitulis 12-14 mm. longis 6-8 mm. diametro ; involucri sub- 
eylindrati fusco-viridis 1 cm. longi 4-5 mm. crassi squamis oblongis 
obtusiusculis striatulis leviter convexis nullo modo carinatis ; radiis 
ca. 3; corollae tubo gracili glaberrimo 5 mm. longo, ligula elliptica 
4mm. longa 2.2 mm. lata bidentata alba; achaeniis immaturis con- 
___ cavo-convexis obovato-oblongis 4.6 mm. longis glabris ; floribus disci ca. 
10 gracillimis, tubo corollae ca. 9 mm. longo, faucibus brevissimis 
campanulatis, lobis limbi 5 lineari-oblongis obtusis recurvatis albis ; 
_ filamentis albis tomentosis quam antherae virides multo brevioribus. — 
Outer circle of mesas, Otinapa, Dura i 50 m. 
pa, Durango, Mexico, alt. about 24 ) 
oS August, 1906, Dr. H. Palmer, no. 377_(type, in hb. Gray): 
Mis species in its few scatte. clearly petiolate leaves, 
: and unkeeled involucral scales, closely approaches G. Rosei Robinson 5 
‘ 
