212 Planta. Lindheimeriaiue. 



405. Atrema Americana, DC. Prodr. 4. p. 250. Margin 

 of woods, in rocky, dry prairies, New Braunfels. May. 



LORANTHAC^E. 



406. Phoradendron flavescens, Nutt. ; Engelm. in PL 

 Fendl. p. 59, in not. : var. p. pubescens, Engelm. Mss. On 

 Muskit trees, Upper Guadaloupe, Elms, &C. 1 



1 Dr. Engelmann communicates the subjoined revised character and remarks. 



"Phoradendron flavbscens (Nult.): ramis teretibus ; foliis oblanceolatis 

 obovatis nunc orbiculatis obtusis in petiolum brevem attenuatis trinerviis ; spicis 

 masculis subverticiilatis folium cequantibus, articulis 4-5, 15 -35-floris ; fcemineis 

 suboppositis folio brevioribus, articulis 3-4 4- 10-floris ; floribus depresso-globosis 

 annulato-carinatis ciliatis subtrifidis. — Var. a. glabriusculum : foliis oblan- 

 ceolatis seu obovatis 3-nerviis in petiolum sensim attenuatis glabris ; ramis junio- 

 ribus puberulis : — jS. pubescens : foliis ut in a, seel puberulis ; ramulis canescenti- 

 b us: — y. orbiculatum (Ph. orbiculatum, Engelm. PL Fendl.): foliis obovato- 

 orbiculatis in petiolum brevem abrupte contractis vix trinerviis subpubescentihus. — 

 New Jersey to Southern Missouri and New Mexico, and south to Texas. Var. a. 

 is the more northern form, mostly in low woods along water courses ; ft. in damp 

 places on Ulmus, Algarobia, and also Quercus falcata, near New Braunfels, San 

 Antonio, etc. y. in Texas and Arkansas on dry sterile land, on Quercus nigra and 

 other Oaks. Flowers, December to March ; fruit ripens the following winter. 



"The nearly related Phoradendron tomentosum, from South of the Rio Grande, 

 has smaller leaves, longer spikes, etc. Plwradendron villosum of Oregon has much 

 smaller and spatulate tomentose leaves, etc. 



" I take this opportunity to make some corrections and additions to my paper on 

 Viscum and the related genera, printed as a note in Plantce Fendlcriance, pp. 

 58, 59. 



" I. VISCUM Bacca globosa, pulposa, semipellucida, monosperma, 



corolla persistente coronata. 



" II. PHORADENDRON, Nutt. Flores diceci, globosi. FL masc. Perian- 

 thium 3-(raro 2- s. 4-) lobum : anthera loborum basi adnatre, transversse, biloculares, 

 poris s. rimis verticalibus duabus dehiscentes. Fl.fasm. Perianthium 3- (rare 2-s. 

 4-)- lobum: ovarium inferum, tubo adnatum, uniloculare ; ovulo uuico pendulo. 

 Stigma sessile, plus minus bilobum. Bacca globosa, pulposa, semipellucida, mo- 

 nosperma, perigonio persistente coronata. — Frutices Americani, etc. 



"* Foliosa; foliis lamina dilatata basi attenuatis; spicis faemineis plus minus 

 elongatis ex articulis pluribus plurifloris constitutis. 



"1. Phoradendron flavescens, Pursh, sub Visco. Vide supra. 



"2. Ph. tomentosum, DC, sub Visco. 



"3. Ph. villosum, Nutt., sub Visco: tomentosum; ramis teretibus ; foliis ob- 

 lanceolatis s. spathulatis obtusis in petiolum brevem attenuatis obscure trinerviis s. 

 subenerviis ; spicis fcemineis oppositis s. verticillatis abbreviatis 2 - 3-articulatis ; 

 bracteis truncatis ; articulis brevibus, inferiore 6-8-floro, superiore 2-floro ; floribus 

 depresso-globosis annulato-carinatis puberulis 3-fidis. — Wahlamet Woods, Oregon, 

 Nuttall. — Leaves 8-12 lines long, 3-4 lines wide. Spikes 3-4 lines long. 

 Flowers 0.5-0.6 of a line in diameter, like those of the two foregoing species de- 



