#31 peripheral vein or tertiary vein

[Anonymous]

Term: peripheral vein → new PO or synonym to PO:0008021:tertiary vein

Definition: A vein located toward the margin of the leaf lamina

Pankaj: How different is it from tertiary vein present in the peripheral region. The said peripheral vein could be any vein second order and upwards that is present near the margins of the lamina. The only thing I can come up is these can be any vein with second and higher order with no distal ends. The suggested proximal ends merge with other veins to form a continuous vein. We will discuss this term with our experts.

See image in the attachment file.

[Nobody/Anonymous]

peripheral vein picture

[Ramona Walls]

Yes, peripheral veins can be any order (second or higher). Suggest that we not include this term. Users want to annotate to peripheral vein should use the vein order (if the know it, if not use generic leaf vein) plus the PATO term peripheral (PATO:0002107).

[Maria Alejandra Gandolfo]

I agree with Ramona, actually most "peripheral" veins are defined on the bases of size. Tertiary veins is a term used for those viens that are in between the Secondary Category veins (the ones that form the first loops or brochidodromous venation) and the Fourth Category veins. Veins that are between the brochidodromous loops and the margin have different sizes as well and depend on the number of loops that they form.

Tertiary veins ARE not synonym of peripheral veins. I agrre with Ramona and we should not include the term. When necessary we can discuss the terms for leaf architecture (venation patterns) and include the proper terminology.

[Ramona Walls]

I am going to reject this term and close this item.