appear to be covered with minute, elevated points ; below 

 paler, and quite even. Stipules opposite, broadly ovate, 

 almost rotundate, white, membranous, entire or two- or 

 three-toothed at the extremity, the margin often glandular. 

 Flowers at the extremity of the branches in rather com- 

 pact and somewhat corymbose, leafy panicles. Calyx four- 

 partite, with linear, oblong, spreading segments, sometimes 

 a little ciliated at the margin. Corolla somewhat infundi- 

 buliform, white, or very pale purple, yellow at the base, 

 the limb cut into four spreading, rather acute, ovate seg- 

 ments : — inside, the corolla is slightly downy on the limb, 

 and in the lower part of the tube. Stamens small, inserted 

 near the base of the tube, and not attaining to the summit 

 of it. Anthers linear, yellow. Pistil: Germen inferior, 

 turbinate, marked with elevated lines, two-celled, many- 

 seeded, the ovules attached to a central, free column : the 

 upper part of the germen is convex. Style as long as the 

 tube of the corolla. Stigma bifid, glandular, white. Fruit 

 a half-inferior, two-celled capsule, surrounded by the per- 

 sistent calyx and opening at its free, two-lobed extremity 

 into two valves. Seeds small, black. 



This plant was received at the Botanic Garden, Glasgow, 

 from Mr. Cunningham, of Edinburgh, as a native of the 

 Blue Mountains of N. America, whence I believe it was 

 introduced by Mr. Blair. In referring it to the Houstonia 

 angustifolia of Michaux (which is now almost universally 

 considered to be the same as the H. longifolia of Will- 

 denow), I have been influenced by a specimen, evidently 

 of the same species, from Lake Champlain, in Dr. Booths 

 collection, marked as the plant of that name in Pursh's 

 Herbarium. Other individuals which 1 possess from North 

 America have narrower and sharper leaves : so that the 

 plant is probably liable to much variation in that respect, 

 as well as in the color of its flowers. But our speci- 

 mens accord almost as well with Michaux's description ot 

 the narrow-leaved varieties of his H. varians (purpurea, 

 Willd.) as with his angustifolia; only he describes the 

 stamens as exserted, which is not the case in our plant. 1* 

 this plant proves, as I have good reason to suppose it is, a 

 true Houstonia of Linnaeus, 1 do not see how it can possibly 

 be separated from the Rubiace^e and referred to Gentiane^, 

 as has been done by De Candolle. Indeed Anotis ot 

 De Cand. in the Ord. RubiacejE, seems to me identical 

 with the Genus of the present individual. 



Fig. 1. Corolla. 2. The same laid open. 3. Calyx and Pistil. 4. Sec- 

 tion of a Germen. 5. Capsule. 6. Stipules. — Magnified. 



