RiBEs. PENTANDRIA. MONOGYNIA. 271 



Hab. On the sides of hills and rocks on the Alleghany Moun- 

 tains. April — June. Furs/i. In Pennsylvania. Muh' 

 lenb er g. 



182. HAMILTONIA. Muhlenberg. 



Polygamous. Perfect Flower. Calyx tur- 

 binatc-campanulate, 5-cleft. Corolla 0. Nectary with 

 the disk 5-toothed. Style 1; stigtnas 2 — 3, sublenti- 

 cular ; germen immersed in the nectary. Drupe pyri- 

 form, 1 -seeded, enclosed in the adhering base of the 

 calyx. Staminiferous Flower resembling the 

 perfect, except in wanting the pistil. Muhl. in 

 Willd. Spec. IV. p. 1114. Nutt. Gen. I. p. 156. 

 Pyrularia Mich. Fl. I. p. 231. Roem. 8f 

 Sc hult. Gen. 1058. Nat. Ord. ^Eleagni Juss^ 



SANTALACEiE R. B T OW n ( Nut t.J Oll-nut. 



H. oleifera Muhl.inWilld. Spec. 1. c PurshFL 

 I. p. 178. t. 3. Nutt. Gen. 1. c. Pyrularia piiiera 

 Mich. Fl. \\. p. 233. Rotm. & Schult.Y. p. 575. 

 A shrub 4 — 6 feet high, very pubescent. Root surculose, pe- 

 netrating very deep, foetid. Leaves alternate, oblong-ovate, 

 entire, acuminate, 2 — 3 inches long, 1 to I^ wide, petioled, 

 strongly veined on the under side, silky when young. Floivers 

 small, in a terminal raceme, greenish-yellow ; fiedicels articu- 

 late at the base. Calyx of the staminiferous flower shortly 

 campanulate ; glandular disk penetrating and filling the tubu- 

 lar base of the calyx. Perfect flower^ with the segments of the 

 calyx ovate and reflected ; glandular disk more conspicuous. 

 Stamens opposite the divisions of the calyx, and alternating 

 with the dentures of the disk. J^ut depressed, globular, 

 1-celled, 1-seeded, enclosed in the carneous base of the calyx, 

 appearing inferior from its immersion in the disk ; adhering 

 calyx conspicuously veined ; shell of the nut whitish, thin, a 

 little verrucose, sharply acuminate by the persistent base of 

 the styicy as in the capsule of Celastrus scandens. Perisfierm 

 large, very oily, acrid to the taste, (probably cathartic) its sub- 

 stance somewhat lamellated ; corculum at the base, minute. 

 The germen has probably more than one seed. JSTu 1 1. 

 Hab. On the margins of mountain rivulets, in the central and 

 highest parts of the chain. Pennsylvania. May — June. Ntct' 

 tall and Pur s It Oil-nut or Elk-nut. 



The whole plant is more or less oily, in consequence of 

 which deer, and domestic cattle devour it with avidity. 



183. THESIUM. L. 

 Calyx 1-leaved, tubular- campanulate, 4 — 5-cleft. 



