492 



obovate, 4-10 cm. long, rounded or notched at the apex, occasion- 

 ally mucronate, narrowed into petioles which are shorter than the 

 blades or longer ; scapes erect, 3-7 dm. tall, furnished with scale- 

 like bracts, widely branching above, the tips of the spreading 

 branches recurved ; bracts subtending the flowers oval, about 

 4 mm. long, obtuse; calyx 6-7 mm. long, the tube sparingly 

 pubescent with soft hairs at the base only, the 5 segments tri- 

 angular, slightly acuminate, more than i mm. long; corolla deep 

 blue. 



In salt marshes, Florida. Summer and fall. 



Specimens of a beautiful and previously undescribed species of 

 Limoniuin have been in our herbaria for some years ; they are from 

 northern and eastern Florida and represent a species of more 

 slender and more graceful habit than that of Limonhim Catolini- 

 amwi. 



The following synopsis and comparison of the diagnostic char- 

 acters of Limoniiini Nasliii and L. Carolinianuni will serve to make 

 clear the difference between the two species : 



Limoniuin Nashii. Branches of the panicle spreading, the tips 

 recurved ; bracts subtending the flowers oval ; calyx-tube spar- 

 ingly pubescent at the base ; calyx-segments triangular, slightly 

 acuminate. 



Linioniuni Caroliniamnn. Branches of the panicle ascending, 

 the tips curved upward ; bracts subtending the flowers subor- 

 bicular ; calyx-tube bristly-pubescent ; calyx-segments ovate. 



The species has been collected as follows : 



Florida: Chapman; St. Marks, Aug. 1843, Rugel; Titusville, 



Brevard County, July 31, 1895, Nash. no. 2305. 



EuPATORiUM PETALODIUM Britton. 



Perennial, bright green. Stems erect, 3-7 dm. tall, simple 

 below, corymbosely branched above, somewhat rough with rigid 

 hairs ; leaves mainly opposite (a few of the upper ones alternate), 

 oblong to lanceolate, 2-8 cm. long, obtuse or rarely acutish, 

 bluntly serrate or crenate-serrate, except the entire more or less 

 cuneate base, glabrous or sparingly pubescent on the nerves be- 

 neath, sessile; peduncles and pedicels pilose ; involucres trumpet- 

 shaped, 9-10 mm. high, the bracts linear-spatulate, the outer ones 

 abruptly acuminate, the inner ones mucronate, slightly surpassing 

 the flowers, petal-like, white ; corolla 3 mm. long, the segments 

 ovate, spreading ; pappus about equalling the corolla; styles ex- 

 serted ; achenes black, nearly 3 mm. long, 5 -angled. 



In dry pine barrens, Florida. Summer and fall. 



