1120 K - H - Ztthn - — Hieracium. 





524. H. marylandicum Zahn. — lnler H. Gronovii et paniculatwn. Phyllo- 

 podum. Caulis gracilis vel crassus floccosus, inferae violaceus et breviter, basi dense, 

 sursum deminute setoso-hirsutus, supra medium epilosus, apice densius floccosus eglan- 

 dulosus. Anthela saepissime longissima diffusa foliata, acladio 10 — 25 mm, ramis 

 5 — 12 valde remotis oblique erectis longis corymboso-paniculatis pleiocephalis sub- 

 floccosis apice parceglandulosis, inferioribus longissimis polycephalis, pedicellis sub- 

 tenuibus dense floccosis glandulosisque. Folia viridia supra subglaucescentia et disperse, 

 margine petioloque densius setosa (2 — 4 mm), sparsim minute glandulosa, subtus vix 

 parce vel densius floccosa, radicalia obovata rotundato-obtusa vel oblonga obtusa in 

 petiolum alatum brevem attenuata florendi tempore interdum emarcida, caulina 5 — 1 

 subremota submagna sensim minora elongata obelliptica vel oblonga obtusiuscula mucro- 

 nata vel superiora oblongo-lanceolata vel angustiora acuminata sessilia (inferiora in 

 petiolum late alatum brevem sensim attenuata) supra glabra. Involucra ad 7,5 mm 

 ovato-cylindrica dense glandulosa epilosa rt efloccosa, squamis sublatiusculis obtusis 

 obscure viridibus pallide marginatis. Ligulae breves, stylis fuscis. Achaenia 3 — 3,5 mm 

 fuscoatra sursum subattenuata. 



Maryland (Smith pro H. mariano)\ — Juni — September. 



525. H. Scribneri Small in Bull. Torrey Bot. GL XXI. (1894) 20, t. 172. — 

 Priori, ut videtur, valde simile. Glaucescens. Caulis 4 — 5 dm superne sparsim vel 

 diffuse ramosus, foliosus, glaber vel inferne pilis longis argenteis subpilosus, saepe 

 flexuosus, =t striatus, ramulis pedicellis glabris vel dense glandulosis. Folia diversa, 

 inferiora oblonga vel oblongo-spathulata 5 — 8 cm longa acuta petiolata basi attenuata, 

 reliqua oblonga, oblanceolata vel angustius vel lineari-lanceolata, 4 — 12 cm longa inter- 

 dum alato-(>fiddle-shaped«) petiolata, sessilia vel subattenuata, acuta, omnia utrinque 

 subglabra, apiculato-paucidenticulata, parce vel densius argenteo-ciliata. Anthela ± 

 corymboso-paniculata. Calatbidium dilute luteum 20 — 25 mm in diametro. Involucra 

 10 mm subglabra vel glandulosa squamis lineari-subulatis acuminatis, extimis i / 2 — x / 3 

 brevioribus. Achaenia columnaria vel apice leviter constricta indistincte costata, pappo 

 brevi (squamas internas haud superante). Inter venosum (vel Gronovii) et paniculatum. 



Tennessee: Lookout Mt. (Scribner pro H. paniculato). — Mai. 



526. H. pennsylvanicum Fr. Symb. (1848) 150; Epicr. 156; Zahn in Engler's 

 Bot. Jahrb. LH. (1915) 276. — H. Gronovii y. hirsutissimum Torr, et Gray, Fl. 

 N.-America II. (1843) 477? — H. scabrum pennsilvanicum Hook. Fl. bor.-am. I. (1833) 

 298. — Pilosella pennsüvannica Sz. Sz. in Flora (1862) 439. — H. Marianum c. 

 Pennsylvanicum A.-T. Spicil. (1881) 13. — H. Floridanum Britt. in Torreya 1.(1901) 

 42. — Inter Gronovii et scabrum. Caulis robustus crassus ad 1 m altus apbyllopodus, 

 inferne dense et longe vel brevius setosus, sulcatus, sursum minus pilosus sed densius 

 floccosus, inferne efoliatus. Anthela longissima (ad 6 dm) determinata coarctata aphylla 

 vel bracteata, ramis numerosissimis (ad 60) subremotis divaricatis vel erectis tenuibus 

 floccosis dense t»nuiter glandulosis subracemoso-2 — 10-cephalis (raro magis elongatis 

 squarrosis), pedicellis 15 — 20 mm tenuissimis dense vel canofloccosis epilosis, glandulis 

 tenellis subbrevibus densissimis obsitis. Folia caulina 15 — 35 ovali-ovata, elliptica vel 

 ovato-oblonga saepe elongata submagna (9 : 4 — 5 cm) apice rotundata vel obtusa vel 

 obtusiuscula basi dz lata vel rotundata vel leviter cordata sessilia vel inferiora alato- 

 subpetiolata, ubique pilis basi albobulbosis densiusculis villoso-hirsuta vel supra saepe 

 glabrescentia, simul subfloccosa, subtus dense floccosa, basi hirsutissima, haud vol sul>- 

 denticulata margine minute glandulosa, supra caulis medium cito minora vel valde 

 reducta ovato-acuminata. Involucra 5 — 8 mm cylindrica sat parva pauci (20 — 25)-flora 

 epilosa (inferne dense) glandulosa basi subfloccosa, squamis sublatiusculis linearibus 

 acutiusculis vel acutis obscure vel dilute viridibus pallide submarginatis. Ligulae breves 

 flavae, stylis fuscis. Achaenia 3,5 — 4 mm tenuia sursum vix attenuata vel truncata, 

 pappo albo-flavescenti brunnescenti. Quasi H. Gronovii aphyllopodum dense foliosum. 



Sandige Wälder in Illinois: Beardstown! Pennsylvania! Texas: Houston! 

 Florida: Tallahassee (Nash, PI. of Florida n. 2324)! Santo Domingo: An Felsen 



