Isotrema macrophyllum

Family:Aristolochiaceae
Species:Isotrema macrophyllum (Lam.) C.F. Reed
Common Name:Dutchman's-pipe, pipevine
Habitat:**
Associated Ecological Communities:**
Growth Habit:Vine
Duration:Perennial
Category:Vascular
Plant Notes:This species is native south of New York and in New York is cultivated and rarely naturalizes.
Taxonomic Notes:Together the segregate genera Endodeca and Isotrema form a very well supported clade that is morphologically, molecularly, and cytologically distinct from the rest of Aristolochia sensu lato (Kelly and González 2003, Neinhuis et al. 2005, Ohi-Toma et al. 2006, Wanke et al. 2006). These authors work strongly supports Huber’s (1993) taxonomic alignment which recognizes Endodeca and Isotrema as distinct genera. Ohi-Toma et al. (2006), while supporting the recognition of segregate genera within Aristolochia s.l., chose to lump Endodeca under Isotrema because the two share the same chromosome number but their work also strongly supports the recognition of the two as distinct at the generic level with the choice somewhat subjective. We currently recognize Endodeca (E. serpentaria) and Isotrema (I. macrophyllum, I tomentosum) as distinct from Aristolochia (A. clematitis) following (Huber 1993, Kelly and González 2003, Neinhuis et al. 2005).
Status:Not Native, SE (State Rank), G5 (Global Rank)
References:Mitchell and Beal 1979, Berringer 1979

** Not applicable or data not available.

Classification

Division Equisetophyta
Class Equisetopsida
Sub Class Magnoliidae
Order Piperales
FamilyAristolochiaceae
Genus Isotrema
Species Isotrema macrophyllum (Lam.) C.F. Reed - Dutchman's-pipe, pipevine

Citation

Citation Isotrema macrophyllum (Lam.) C.F. Reed, Phytologia 12: 415. 1965.
Basionym: Aristolochia macrophylla Lamarck, Encycl. 1: 255. 1783.
Type: **

** Not applicable or data not available.

Source

CountyYearHerbariaNotesSubmission Info
Bronx1988 BKL
BKL00035213
Herbarium Name Used: Aristolochia macrophylla
  2/8/2012 - BKL (Steve Glenn)
Madison  NYFA_1990    
Orange1990 NYS    
Putnam1999 BKL
BKL00011406
Herbarium Name Used: Aristolochia macrophylla
  2/8/2012 - BKL (Steve Glenn)
Saratoga1989 NYS    
Suffolk  NYFA_1990    

Synonyms

SynonymFull CitationBasionymTypeNotes
Aristolochia durior Aristolochia durior auct. non. Hill  Many authors for eastern North America have applied this name to what we recognize as Isotrema macrophyllum. Aristolochia durior is now considered a nomen ambiguum (i.e., a name which has been used with different meanings and thus has become a source of error) because the type is based on what appears to be Bignonia capreolata (see Pfeifer 1962).
Aristolochia macrophylla Aristolochia macrophylla Lamarck, Encycl. 1: 255. 1783.