In an essay on herbaceous plants read before the Massachusetts Horticultural Society, Mr. W. A. Manda noted the various families which gave us the most beauty in our gardens. He said:

"There are a hundred species and varieties of pentstemons, all of which are showy, but only a few will stand our winters, being for the most part natives of the Western and Southwestern States. Among the hardy kinds the best is P. diffusus. It grows from twelve to eighteen inches high, and the large purple flowers are very freely produced from May to August. P. pubescens is another good species, with long spikes of pale violet flowers, produced in May or June. P. ovatus is also worth growing; it flowers in June and July. P. glaber is a very showy and compact plant; the stems are a foot high, and covered for the most part with very large blue or purple flowers. P. laevigatus and the variety Digitalis are showy plants, growing to the height of five feet; the flowers are white in dense spikes. P. confertus has a profusion of lilac flowers, though not very large. P. barbatus is one of the best tor general culture; the leaves are shining, and the flowers, which are borne on dense spikes, are deep red. There are several varieties, the best of which is Torreyi, more robust than the type, flowering later, and having darker flowers and larger branching spikes.

Closely allied is the genus chelone, or turtle head, of which three species are hardy: C. glabra, with white flowers, and C. Lyoni and C. obliqua, with rose-colored flowers".