48 PLANTS OF MASSACHUSETTS. 



Seeds ■ crowned with a silky down. Would form a fine plant 

 for the garden. 



The four other species, coloratum, and lineare, Muhl., molle^ 

 T., palustre, L., have few attractions. 



Gaura. L. 8. 1. 



G. biennis. L. A showy plant with terminal spikes of sessile, 

 dark rose-colored flowers on a hairy, purplish, herbaceous, erect 

 stem, with alternate, lanceolate, toothed leaves. Differs from 

 an Epilobium in the tube formed by the calyx being obovate, and 

 the seeds having no pappus. Found by G. B. Emerson in 

 Brookline. 



ORDER 48. HALORAGE^. 



So called from the genus Haloragis, which grows in the eastern 

 Archipelago. 



Floral envelopes minute, superior ; stamens inserted, with the 

 petals, on the calyx, which is permanent on the ovary of one or 

 more cells ; leaves of various positions ; flowers axillary, sessile, 

 some are monoecious, or dioecious. Have no important proper- 

 ties ; some are mere weeds ; spread widely over the earth. 



Myriophyllum. L. 20. 12. 



, J[T. spicatum. L. Spiked Water Millfoil. Stem long, rising 

 through the water, and projecting the spike of whorled and naked 

 flowers above the surface ; leaves immersed, whorled, capillary- 

 pinnate ; 3 bracts to each flower, the middle one largest ; petals 

 oblong, obtuse, brownish-green, caducous ; flowers in July and 

 August ; grows in ponds and deep still waters. 



JW. tenellum, Big., is found at the pond in Tewksbury. 



JH. procumhens, Big., found at Dan vers by Dr. Nichols. 



Both these species were investigated by Dr. Bigelow, are 

 rather small and singular plants, and grow in the mud of ponds. 



M. verticellatum. L. Water Millfoil. Grows also in water. 



