FLORA LUDOVICIAXT. 



DESCRIPTION OF THE NEW SPECIES REFERRED TO IX THE POL 



LOWING LISTS. 



1. Euphorbia Ludoviciana. — Stern erect, very slender, smooth 

 throughout, alternately branched. Stipules broad lanceolate. Leaves 

 wry thin, oblong abovate, slightly tapering towards the base, short 

 petioled, smooth entire. Flowers axillary. Involucre short-pedi- 

 celed, nearly sessile. Glands six, with six whitish persistent appen- 

 dages, oblong, obtuse. Capsule orbicular, slightly convex, somewhat 

 riat-topped % Seed broad, rounded on one side and sharply angular 

 on the other, so as to form a triangular solid, with the curved upper 

 side, thickly sprinkled with minute blackish dots. This Euphorbia 

 grows from one to two feet high, has an extremely slender, virgate 

 stem. The branches are all simple, are long below and continue 

 gradually to decrease in length to the top, where they give place to 

 almost sessile leaves, with flowers in their axils. 



Habitat. — It is found in St. Landry parish, in red, loamy soil. 

 2. Euphorbia Megancesos. — Smooth throughout, stem very slender, 

 ascending, bearing the short flower-branches. Leaves opposite, 

 short-petjoled, linear oblong, narrow, obtuse, oblique at the base, 

 obscure dentate, transparently dotted, with a crimson streak along 

 the midrib, the whole plant turning red when in seed. Stipules 

 fringed. Flowers in lateral and terminal clusters. Appendages of 

 glands white or rose colored. Capsule obtuse -angled rugose. Seeds 

 reddish, in the form of a coffeebean, with a groove in the flat base 

 dividing the narrower apex, and the slit extending to one-half of the 

 convex surface. 



Habitat — This plant grows in tufts, in great abundance, near the 

 sand beach of Grand Isle, where nothing else but a few grasses and 

 the Ipoma>a pes capra flourishes. Its short stem and long branches 

 are from one-half to one foot long. 



3. Sabbatia Nana. — Stem simple, low, somewhat angled. Leaves 

 small, sessile, the lower spatulate lanceolate, the upper linear lance- 

 olate. Lobes of the corolla five to six, one-third longer than the 



