Eclogue 4 Notes (mostly on plants)

4.2:  tamarisks.  A shrub: 

4.11.Adeo here means "especially." See  Lewis and Short:   Adeo is placed enclitically after its word, like quidem, certe, and the Gr. γὲ, even, indeed, just, precisely. 1. Most freq. with pronouns, in order to render prominent something before said, or foll., or otherwise known .../Adeo is joined with the pers. pron. when the discourse passes from one person to another, and attention is to be particularly directed to the latter: Juppiter, tuque adeo summe Sol, qui res omnes inspicis, and thou especially, and chiefly thou, Enn. ap. Prob.: “teque adeo decus hoc aevi inibit,”  Verg. E. 4, 11

4.15:  ille deum vitam accipiet:  deum is an alternate/earlier form of the genitive plural deorum

colocasia:  probably elephant ears:
very large tuberous plants--the plant is both decorative and produces edible tubers.

acanthus:  another plant with very large, decorative leaves and tall (3 foot) spiky flowers:

The capitals of Corinthian columns are stylized acanthus plants. Below is one from the Pantheon.



 24:  fallax herba veneni:  probably aconite, a beautiful but poisonous plant, named by Vergil in G.2.152: nec miseros fallunt aconita legentes. The mystery writer Agatha Christie frequently had her murderers use aconite to poison their victims in her books.   Here it is described by poison.org:
 "Aconitum napellus (A. napellus, also known as monkshood or wolfsbane) is a perennial herb often grown as an ornamental plant due to its attractive blue to dark purple flowers. All parts of the plant, especially the roots, contain toxins. Aconitine is the most dangerous of these toxins. It is most noted as a heart poison but is also a potent nerve poison. Raw aconite plants are very poisonous.They are used as herbs only after processing by boiling or steaming to reduce their toxicity. 

A. napellus has been used since ancient times as a poison used on spears and arrows for hunting and battle. As wolfsbane, it was believed to repel werewolves (and real wolves!). Ancient Romans used it as a method of execution."  

amomum:  a spice plant from India, probably cardamom.

4.40: rastrum:  a hoe or rake.  This word, for some reason, is neuter in the singular and masculine in the plural.