144 PROCEEDINGS OF THE AMERICAN ACADEMY 



Ch^tanthera Peruviana (sp. nov.) : annua, tenella, diffuse ra- 

 mosa; foliis lineari-cuneatis vel spathulatls versus apicem spinuloso- 

 dentatis laxe villosis mox glabratis, summis angustioribus circa capitu- 

 lum confertis ; involucri squamis subscariosis retusis, exterioribus ova- 

 libus, costa in appendicem nunc folioforraem producta, interioribus 

 lineari-oblongis sajpe mucronulatis ; ligulis linearibus fere glabris in- 

 volucrum vix superantibus, labio interiori parvo brevi apice bidentato. 

 — Andes of Peru, above Banos. Near G. tenella: the first species 

 detected north of Chili. 



Oriastrum cochlearifolium (sp. nov.) : pulvinatum, laxe arach- 

 noideo-lanatum ; foliis in caules breves confertis imbricatis sessilibus 

 crassis obtusissimis muticis dorso mox glabratis intus sub margine in- 

 curvo concavis lanuginosis, inferioribus oblongis, superioribus spathu- 

 latis capitulura sessile arete rosulato-cingcntibus ; involucri squamis 

 omnibus scariosis, apice radiante colorato ovato-lanceolato acuto rigidi- 

 ori ; pappi setis capillaribus rigidis basim versus parce barbellulatis 

 superne fere lajvibus. — Alpamarca, high Andes of Peru. A very 

 distinct species, interesting from its extending the range of the genus 

 farther north than before. Ray-flowers perhaps fertile ; their linear 

 ligule obscurely tridenticulate at the apex, and with two minute teeth 

 at the base on the inner side, representing the lower lip. Mature ache- 

 nia unknown. — Those of 0. GhUense, Wedd., are pyriform ; the papil- 

 Le of their surftxce when soaked swell into a jelly, and then the ache- 

 nium appears as if glabrous. Its pappus in the ray-flowers, generally 

 of two or three caducous bristles, is sometimes wholly wanting ; that of 

 the disk-flowers is nearly uniserial, the bristles united at the base into a 

 ring. They are finer and softer than in 0. pusillum ; but it is not 

 worth while on this account to keep up Aldunatea as a section. — 0. 

 pusillum has abortive stamens in the ray-flowers, not before noticed, 

 still more approximating the genus to Tylloma and Egania, which last 

 might well enough be referred to Oriastrum, and even both, perhaps, 

 back to Tylloma. 



A serious error in transcription vitiates Weddell's amended character 

 of Oriastrum, i. e. the achenia of the disk, instead of those of the ray, 

 are said to be glabrous and effete ; those of the ray, instead of those of 

 the disk, papillose and fertile. 



JuNGiA ferrugixea (Linn, f.) : scandens vel sarmentosa ; foliis 

 5-9-lobatis subtus pannoso-villosis ; capitulis 5-10-floris glomerulatis, 

 gloraerulis in corymbos vel thyrsos congestis ; squamis involucri 



