66 General Notices. 



csespitose, and even proliferous occasionally, in the manner of 

 opimtia, beginning to flower when only two inches high, 

 and scarcely taller than broad, but attaining the height of at 

 least six inches; the ribs from 12 to 17. It is in flower for 

 two days : the flowers about two inches broad, when fully 

 expanded : petals rose-purple : filaments reddish at the 

 base, yellow at the summit." Engel. Note on pp. 245 — 247. 



The Pentstemons are well known to amateur florists, and 

 justly admired. We are presented, at No. 282, with " Pent- 

 stemon Murraydm^m, Hooker : Botanical Magazine, t. 3472. 

 Dry, sandy soil, in open woods, west of the Brazos — May, 

 June. The splendid flame-colored flowers, with a scarlet 

 border, form a pleasing contrast with the bluish glaucous 

 leaves. Pedicels erect ; the flowers horizontal." p. 254. 



A valuable note on the Chara polyphylla, from notices 

 communicated by Prof. Braun, who distinguishes seven sub- 

 species of this very polymorphous plant, which occurs in 

 many diverse forms in America, Asia, and the Sandwich Isl- 

 ands, closes this interesting article. 



MISCELLANEOUS INTELLIGENCE. 



Art. I. General Notices. 



General Treatment of Greenhouse Plants. — The practice of removing 

 greenhouse plants into a higher temperature during the period of their 

 growth, so well explained by Mr. Wood in his various communications, 

 cannot be too earnestly recommended. When it is considered, that in all 

 the countries where they naturally grow, the summers are intensely hot, 

 with clear sunny days, and heavy dews at night, how much quicker the 

 growth of the plants and ripening of the young wood must be than can 

 possibly happen in our dull cloudy climate, even with the aid of glass, the 

 universal custom of turning greenhouse plants out of doors indiscriminately 

 in the month of May, is doubtless one of the very worst modes of treat- 

 ment that can possibly be adopted, especially when, as is often the case, 

 they are placed in some shady situation; at this period many are just be- 

 ginning to grow, others have made some progress, but few or none are 

 within many weeks of terminating their growth and ripening their young 

 shoots, and it is very uncertain whether any of them, under such circum- 

 stances, even in the most favorable seasons, will accomplish their growth, 

 consequently, when the tinje arrives for housing, it will be found that three 

 fourths of them are still in a growing state, and now, when the short cold, 



