PENTANDRIA. MONOGTNIA. 115 



peculiar to Arabia, 1 to Japan, 1 to Siberia, and another to 

 the summit of mount Lebanon, in Syria. 



173. PULMONARIA. Z. (Lungwort.) 



Calix prisiijatic-pentagonal. Corolla funnel- 

 formed, somewhat 5-lobed, orifice open. Stig^ 

 fna emara^inate. 



Flowers almost disposed in terminal corymbs, some- 

 times racemose. Leaves in the American species and in 

 the P. ynaritima smooth and glaucous, calix short, about 

 half the length of the corolla tube. (Meriensia Per- 

 soon.) 



Species. \. P. virginica. '2. paniculata. 3. *marginata. 

 Small, glabrous, erect; leaves hispid on the maiij,in, on the 

 lower part of the stem oblong-spaUmlate or oblong-ovate, 

 upper leaves ovate, acute, semiainplexicuule; flowers sub- 

 paniculate; fasciculi few-flowered, axillary and terminal? 

 caHx acute, about half ihe len-Ui of the corolla tube. 



P. lanceolata. Pursh, Flor. Am. 2. p. 729. 



Perennial. Stem nearly erect, and somewhat branched, 

 scarcely a foot t igh. Radical leaves petiolate, stem leaves 

 sessile, uppermost semiamplexicaule, all glabrous, glau- 

 cous, and somewhat carnose. Fascichs or ramuli, pedi- 

 cellate, a little longer than the leaves, 4, 5, 8, or more 

 flowered. Calix 5-parted, smooth, acute, segments some- 

 what hispid on the margin. Corolla funnel-formed, much 

 like that of P. virgiriicat and of tlie same colour, but 

 smaller, lobes entire. Stamina seated around the orifice 

 ©f the tube. 



Nearly allied to P vlrjinica^ and also probably to the P. 

 paniculata, but the leav^^s are never acuminated or hairy, 

 but perfectly smooth, except on the margin where there 

 are a few scattered hooked, hispid haii-s, often only visible 

 in a dried state. The name of lanceolata is so very inap- 

 plicable that it appeared 'o me necessary to alter it. 



On arid hills near the confluence of Teeion river, Mis- 

 souri. Flowering in June. 



4. panicidata. 5. sibirica. 



The only 3 genuine species of Puhnonaria described 

 are confined to Europe; the American species all arrange 

 under the subdivision Mertejjsia of Persoon. 



174. ONOSMODIUM. Michaux. 



Calix deeply 5-parted. Corolla somewhat tu- 

 |)ular-campiinulatej orifice naked; border yen- 



