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Plural of rhachis.  

Rolled or curled over backwards, towards the abaxial surface. The margin rolled toward the lower side of the blade. Rolled backward; usually said of margins of organs or their extremities (both phases are apparent in the petals).  

A taxonomic study of a group of taxa. An examination of a surgical operation after it has been carried out.  

Notched, with a rounded indentation (usually said of an apex). So blunt at the apex as to be slightly indented.  

Turned backward, turned downward.  

Said of marginal spines, barbs, stem hairs or any protuberances that are bent abruptly backward or point towards the proximal part of the organ. Abruptly pointing downwards or backwards, especially used for prickly leaf margins and barbs.  

(In Apocynaceae) the zone by which the anthers adhere to the style head or stigma; (In Orchidaceae) the gland attached to the pollinia (more correctly called the viscidium); Outgrowth of seed funicle which holds the seed to the fruit (as in Acanthaceae). A band of tissue which holds a structure in place, as found in…

Network of veins. A series of small fibres or tubes forming a network. Network, especially of blood vessels or tubules.  

(Of venation) with a single main vein, the secondary veins running towards the margin, branching again and again and becoming minute, indistinct and net-veined near the margin; like cladodromous, but with the veins less distinct near the margin.