tertiary venation

Listing 1 - 4 from 4 for tertiary venation

MBG: Research: Projects: South America: Venezuelan Guayana
... ..... 4 2(1). Leaves sessile, clustered near branch apices, secondary veins closely parallel, tertiary veins not evident ..... 12. Neotatea 2. Leaves petiolate, more dispersed along the stem ... than 1 cm across (in the flora area), tertiary venation obscure; inflorescence cymose ..... 7. Hypericum 7. Trees; leaves > 5 cm wide, tertiary venation ladder-like; inflorescence racemose ..... 10. Marila 8( ...
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MBG: Research: Acanthosyris annonagustata (Santalaceae), a new species from eastern Ecuador
... , raised and rounded below, secondary lateral nerves 4–7 per side, raised on both surfaces, tertiary venation reticulate, visible on both surfaces; petiole 4–9 mm long, flat to slightly canaliculate above ...
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Bolbitidaceae [First Draft]
... margins crenate to deeply lobed, with or without teeth or spines, venation pattern: veins either free or variously anastomosed, with or without ... veins pattern: secondary veins on either side with 2 or 3 tertiary veins. Fertile leaves 40-90 cm long; petiole 16-45 ... pinnae up to 1.5 mm stalked, terminal segment triangular; venation pattern: veins very irregular, forming a costal areole at least ...
hua.huh.harvard.edu

Lab VIII - Medullosans and Cycads (3)
... the guard mother cell gives rise to only two guard cells. Venation patterns and a non-bifurcating leaf-base also represent derived ... living cycads, note the once-pinnate structure of leaves and pinnae venation patters. The leaves are quite tough, due to the thick ... , thick stems we recognize today did not evolve until the Tertiary. Figure 8.7: Reconstruction of Leptocycas gracilis from the Late ...
www.ucmp.berkeley.edu