432 PROCEEDINGS OF THE AMERICAN ACADEMY 



June. (1.) — " Leraoncillo " ; a hot decoction is used as a remedy for 

 fever and ague. 



Pectis canescens, HBK. Nov. Gen. & Spec. 4. 203, t. 393. 

 Tequila. (418.) 



Pectis Jaliscaxa, Hook. & Arn. Bot. Beech. 296 ? Pappus 

 rather different from that of the original very poor specimen. Kio 

 Blanco, among grass ; Octoher. (760.) 



Artemisia Mexican a, Willd. Rio Blanco, sides of canons ; Sep- 

 tember. (597.) 



LiABUM Palmeri, Gray, n. sp. Herbacea, 1-2-pedalis e radice 

 tuberoso, floccoso-lanata ; foliis basi angusta connatis alte trifidis, seg- 

 mentis linearibus nunc integris nunc laciniato-o-5-lidis supra mox 

 pube laxo delapso glabratis subtus indumento denso pannoso incanis ; 

 caule scapiformi capitula 9-15 racemosa vel i^aniculata gerente ; iuvo- 

 lucro g-pollicari glanduloso-pubescente, bracteis subulato-lanceolatis 

 gradatim imbricatis ; tloribus omnibus hermaphroditis aureis ; recep- 

 taculo nudo piano ; acheniis cano-sericeis ; pappo duplici, exteriore e 

 paleis plurimis albis fimbriato-laceris, interiore plurisetoso rigidulo- 

 fusco. — Rio Blanco, on stony ridges ; September. (586.) Quite 

 unlike any described species. 



LiABUM ANGUSTissiMUM, Gray, 71. sp. Prions soror ; caule gra- 

 cili spithamgeo ad pedalem e radice fusiform!, inferne fere apbyllo 

 foliis (quasi?) verticillatis angusto-linearibus integerrimis discoloribus 

 instructo ; capitulis 1-2 brevipedunculatis iis L. Palmeri subsimilibus. 

 — Guadalajara, in low rich ground in deep ravines; July. (215.) 

 Perhaps an extreme form of the preceding. The specimens are 

 scanty. 



Erechthites hieracifolia, Raf., var. Guadalajara, in low 

 moist bottoms ; July. (248.) 



Senecio heracleifolius, Hemsl. 1. c. 241. Five or six feet 

 high. Guadalajara, in hedgerows and ravines ; October. (697.) 



Cacalia tussilaginoides, HBK. Nov. Gen. & Spec. 4. 168, ex 

 char, ? Leaves not multifid, nor downy beneath. Coulter's no. 426, 

 from Zimapan, accords with the character in the (cauline) leaves; but 

 these too are not downy beneath. Tomentum is commonly deciduous. 

 Rio Blanco, on exposed embankments; July. (168.) — Flowers white. 



Cacalia Schaffneri, Gray, Proc. Amer. Acad. 19. 53, or near 

 it ; ovaries glabrous and leaves more umbrella-like. Roots fascicled- 

 tuberous. Rio Blanco, in sunny ravines ; July. (171.) 



Cacalia cordifolia, HBK. Nov. Gen. & Spec. 4. 168, t. 360. 

 Rio Blanco, ravines and grassy bottoms ; September. (576.) 



