524, 
HELIANTHUS pubescens. 
Illinois Sunflower. 
—p-—— 
SYNGENESIA POLYGAMIA FRUSTRANEA. 
Nat. ord. Composirz. Adanson fam. 2. 103. 
CoryYMBIFERE. Jussieu gen. 177.’ Div. VI. Recept. pa- 
leaceum. Sem. apice dentatum aut paleaceum. _ Flores in 
plurimis radiati, in paucis flosculosi. Recept. HELENtI 
subnudum. ° = 
; HELIANTHER. Cassini in journ. de phys. 88 (an 1819). 191. 
HELIANTHUS. Supra vol. 6. fol. 508. 
H. pubescens, ‘foliis oppositis ovato-cordatis amplexicaulibus villosis tripli- 
nerviis, caule piloso. Vahl symb. 2. 92. ; 
Helianthus pubescens. Willd. sp. pl. 3. 2240. Hort. Kew. ed. 2. 5. 127. 
Pursh amer. sept. 2. 570. Nuttall gen. 2. 177. n. 4. Willd. enum. 2. 
919. 
Helianthus mollis. Lamarck encyc. 3. 81. 
Fielianthus canescens. Michaus bor. amer. 2. 140. 
_(@) Helianthus mollis. Willd. sp. pl. 3.2240, Ejusd. enum. 2. 920. Pursh 
amer. sept. 2. 572. Nuttall gen. 2. 178. : 
Helianthus tomentosus. Michaux bor. amer. 2. 141. 
_ Herbaceus, perennis. Caules orgyales erecti foliost. Fol. sessilia, ovato- 
lanceolata remote appresséque subserrata cuspidato-acuminata, opaco-viren- 
tia, supra pube strigillosa brevi aspera, infra tomento molli brevissimo cine- 
‘ rascentia, sesuncialia latitudine duplo angustiore v. magis, subtrinervia, 
gradatim in parvula decrescentia, superiora alterna, inferiora opposita. 
Flores paniculati, plures, nutantes, lutei, diametro 2-3-uncialt v. circa; 
pedunculi alternt, axillares preter summum terminalem, sepitis breviores 
folio, hirsuti, superné curvatt, foliolis subtrinis superné v. etiam juxta 
calycem muniti, interddm divisi. Cal. atro-virens hirsuto-canescens squar- 
roso-laxatus divaricatus, bis fere brevior radio; foliola lineari-attenuata 
plana acutissima ordine alterno subquadruplici disposita, ciliata, intus depi- 
lia, interiora pauld minora. Rapius multi-(20%) florus, citrinus, contiguo- 
stellatus, neuter: flosc. lanceolati, subplicato-striati, extus obsoleté pubes- 
centes, tubo brevissimo; germine casso glabro albo, pappi paleis aristiformi- 
bus: Discus nigro-flavescens, denud subconotdeo-convexus: flosc. cylindrici, 
ellucido-flavicantes glaberrimi, tubo multoties breviore fauce, limbo brevi 
5-fido lacinulis ovato-acuminatis; fil. elastica; anth. viridi-nigre, polline 
flavo: stig. 2 lineari-angusta, spiraliter reflexa extis hirsuta: germ. album, 
glabrum, turbinato-elongatum, subanguloso-compressum, pappo aristato- 
aleaceo albo, duplo fere breviore flosculo. Recept. subconico-convexum 
paleaceum : palez naviculari-complicate acuminate, superne atro-virentes, 
dorso carinate villose atro-rubentes. 
A perennial species growing to a thicket of tall upright 
simple leafy stems, eight feet high or more. Found wild in 
the Illinois country, in Kentucky, in Tennessee, and 
