FERNALD. — GENUS PECTIS. 61 



were : " Pappus disci 2-serialis, ser. ext. piliformi, brevi, interiori anguste 

 paleacea, serrata, longa ; radii nullus aut dimidiatus, coroniformis, brevis." 

 To this genus he transferred Pedis canescens, at the same time describ- 

 ing L. saturejoides which differs from typical L. canescens chiefiy in 

 having no ray-pappus. In the same work Lessing instituted the subtribe 

 PectidecB ^ (then placed under Vernoniacece) to include Pedis, Lorentea, 

 Andromachia^ Liabum, and Cacosmia. 



In 1831 Lessing ^ took up critically the genera of the subtribe Pedideoe. 

 as he then understood it, i. e. Pedidium, Pedis, and Lorentea. The 

 new genus Pedidium had " Pappus aristis, paucis, subulatis, planis, 

 rigidis, cornels, basi incrassatis, liBvissimis, insequalibus, achaenio breviori- 

 bus, demum divergentibus " ; and the single species Pedidium pundatum, 

 founded upon Pedis punctata, Jacq., is described as having on the disk- 

 akenes two aristae, on the ray-akenes three. Note that in the original 

 generic description LinntEus says ^'Pappus aristatus,"^ and that the char- 

 acters of Pectidium are those ascribed by Cassini to " true Pectis,^^ 

 including P. linifolia, L., and P. pundata, Jacq. The genus Pedis 

 (including Cryptopetalon and Chthonia, Cass., and Lorentea, Lag. not 

 Less.) Lessing chai-acterized by " Pappus uniserialis, serratus, aut late 

 paleaceus, paleis 1-nerviis, semilanceolatis, in setam desinentibus, saepe 

 setigero-laciniatis, aut setaceo-paleaceus." In the genus as thus defined 

 he placed P. ciliaris, L., P. linifolia [Less, not L.], P. angustifolia, 

 P. elongata, P. Bonplandiana, P. pygmcea, and P. prostrata ; and a 

 number of new species, P. Swartziana founded upon P. ciliaris, Swartz,^ 

 in part, and four others from the West Indies. To the genus Lorentea 

 he added L. humifusa {Pedis humifusa, Swartz), and a new species, 

 L. sessiiijlora, whicli we know only from South America. 



In 1832 Torrey's Pedis angustifolia was taken up by Rafiuesque ^ 

 under the name Helioreos, though this name appears to have been 

 overlooked by the subsequent authors who took up De Candolle's 

 Pedidopsis. 



In the Prodromus De Candolle ^ accepted, with slight modifications, the 

 views of Lessing. He took up the original subtribe Pedidece of Lessing ; "^ 

 but of his later subtribe Pedidece ^ he made the division Eupectidece to 

 embrace Pedidopsis, Pectidium, Pectis, and Lorentea. Of Pedis am 



1 Less. Linnaea, v. 134. 5 Atl. Jour. (1832) 145. 



2 1. c. vi. 706-721. 6 prodr. v. 98-103. 



3 L. Syst. Nat. ed. 10, 1221. ^ LimiEea, v. 134. 



4 Obs. 307. 8 Less. 1. c. vi. 706. 



