agrosto-, agrost- +

(Greek: wild grass; grass)

agrostographer (noun), agrostographers (pl)
Someone who writes about grasses. Mrs. Plant was an agrostographer who described different kinds of grasses in her books, but also was a fabulous illustrator of the various kinds of grasses.
agrostographic, agrostographical (adjective); more agrostographic, most agrostographic; more agrostographical, most agrostographical
A reference to or a description of grasses: Since Joan was planning her garden, she decided to find an agrostographic article giving detailed information about and photos of different kinds of lawns.
agrostography (s) (noun) (no pl)
A scientific description about various kinds of grasses: In the book about agrostography, Mr. Small found out that there were at least a dozen different grass species that were normally used in North American lawns.
agrostologist (s) (noun), agrostologists (pl)
An individual who is skilled in the study of grasses: Mr. and Mrs. Cotton had a gorgeous lawn in front of their large house due to the fact that Mr. Cotton was an agrostologist who knew exactly what kind of grass to have and how to take special care of it throughout the year.
agrostology (s) (noun) (no pl)
That part of botany that deals with grasses; graminology: In the field of agrostology, Agnes Chase wrote a book titled First Book of Grasses: The Structure of Grasses Explained for Beginners

Agrostology is a division of systematic botany concerned with the study of grasses.

Grass is a form of plant life that first grows under your feet and then over your head.

—Evan Esar
grass
1. A very common plant with thin green leaves that covers the ground.

A single piece of grass is called a blade of grass.

2. A low green narrow-leafed plant that grows in fields and gardens, is eaten by animals; such as, cows, sheep, and some other herbivores.
2. An area used to make lawns, sport's fields, or pastures.