Aristolochia gigantea Mart. et Zucc.

Aristolochiaceae


Morphology

liana 3m

Ecology

tropical rain forest

Chorology

Central South Amarica

Xylem

Indistinct rings, vessels solitary, vessel diameter 150-230mµ, vessels thick walled (2mµ), simple perforation at the axial ends, round intervessel pitting, fibers thin to thick-walled, fibers with bordered pits with slit-like apertures, parenchyma apotracheal, paratracheal, vascular bundle form remaining, rays very large, locally with sheet cells, ray cells unlignified with square cells. Crystals absent.

Xylem-Code

See annex

Phloem

Phloem with small sieve cells and large parenchyma cells. Distinct ray dilations. Cortex with fragments of an earlier sclerenchymatic belt. Fiber tracheids in the cortexVery thick phellem.

Explanations

For explanations please see the Feature Characteristics.

Cross section
   
Tangential section
 
Radial section
  
Bark
   

© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010