( 3099 ) 



HotSTONIA LONGIFOLIA. LONG-LEAVED 

 HOUSTONIA. 



******************* 



Class and Order. 



Tetrandria Monogynia. 



( Nat. Ord. — RubiacejE. ) 



Generic Character. 



Cat. 4-fidus. Cor. infundibuliformis, 4-fida. Stigma 

 bifidum. Caps, biloeularis, placenta fungosa dissepimento 

 annex a. 



Specific Character and Synonyms. 



Houstonia * longifolia ; caule erecto ramoso tetragono ad 



geniculas praecipue pubescente, foliis lineari-oblongis 



radicalibus inferne attenuatis pubescentibus basi cilia- 



tis, stipulis lato-ovatis integris vel bi- tridentatis mem- 



branaceis, staminibus inclusis. 

 Houstonia longifolia. Gcertn. de Fruct v. I. p. 226. t. 49. 



/ 8. (quoad fructum). Willd. Sp. PI. v. I. p. 583. 



Roem. et Sch. Syst. Veget. v. 3. p. 208. Spreng. Syst. 



Veget. v. 1. t. 427. Bigel. Fl. Bost. ed. 2. p. 53. 



Elliott, Carol, v. 1. p. 192. Torrey, Fl. Am. v. 1. 



p. 173. 

 Houstonia angustifolia. Mich. Fl. Am. v. I. p. 85. Pursh, 



Fl.Am.i. I. p. 106. 



Descr. Perennial. Root small, of many branching fi- 

 bres. Stem from four or six inches to a span or even a 

 foot high, branched, at times very considerably so, four- 

 sided, sometimes nearly glabrous, generally downy below 

 the joints. Leaves linear-oblong, in our specimens oppo- 

 site, spreading, the radical leaves the broadest and atten- 

 uated at the base, pubescent, especially near the margin on 

 the upper surface, and ciliated at the base ; the cauline 

 leaves only ciliated at the base. The upper sides of the foli- 

 age are of a rather dark green, and when seen under a lens 



appear 



* In compliment to William Houston, who published a Memoir on the 

 Contrayerva in the Philosophical Transactions. 



