SUPPLEMENT. 
THE FAMILIES OF FLOWERING PLANTS. 
By CHARLES Louis PoLLARD. 
CHAPTER XXX.—Continued. 
AMILY GLOBULARIACEAE. Globularia Family. A small group 
of herbaceous or shrubby plants, natives of both shores of the Med- 
iterranean, having flowers borne in a head and surrounded by an 
involucre, a character from which the name of the principal genus is 
derived. The calyx is 5-parted ; the corolla tubular, 5-lobed and some- 
what 2-lipped ; stamens, 4. Ovary free, one-celled, becoming in fruit an 
achene, closely invested by the persistent fruiting calyx. There are 3 
genera, Globularia, with 17 species, Lytanthus, with 2, and Cockburnia, 
with 1. 
Family Acanthaceae. Acanthus Family. Herbs, shrubs, or rarely 
trees, with opposite leaves and irregular or nearly regular flowers. 
Calyx 4-5-parted. Corolla 5-lobed, frequently 2-lipped. Stamens 2 or 
4, in the latter case didynamous. Ovary free, 2-celled. Capsule 2- 
celled, loculicidally 2-valved. The family contains about 175 genera and 
1800 species, widely distributed in warm temperate and tropical regions. 
Many are mere weeds, but some are ornamental plants. The Old World 
genus Acanthus has served for centuries as a pat- 
tern for art designs ; the leaves of A. spinosus are 
said to have furnished to Callimachus the model 
for the Corinthian capital in architecture. 
Our native plants of this family are few in 
number. Ruellias, of several species, low herbs 
with purple flowers, are rather common plants of 
the late summer. The water-willow (Dianthera) 
grows in large masses on the edges of ponds and 
streams, its speckled flowers being exceedingly 
irregular. In the greenhouse we find numerous 
handsome species of Justicia and Aphelandra. 
Most of the Acanthaceae contain a bitter princi- 
ple, and some few are of value in medicine. (See 
Fig. 208.) 
: Family Myoporaceae. Myoporum Family. A 
Fre. 208. A native Acar’ group of shrubs, natives chiefly of Australia, 
thaceous weed, Diapedium as- 
| gurgens. Original. Aboutone- comprised in about 5 genera and 80 species. They 
