256 APETALOUS EXOGENS 



Obs. The inner bark of this species is so abundant in mucilage, 

 that it has been added to the materia medica, in our shops. Being 

 of smaller size, and the branches rather straggling, it does not 

 answer for a shade tree so well as the preceding. 



SUBORDER II. CELTID'EAE. 



Flowers monoicously polygamous ; subsolitary ; fruit a drupe ; albumen scanty ; 

 mbryo curved. 



362. CEI/TIS, Tournef. 

 [An ancient name of the Lot MS, applied to this genus.] 



Calyx deeply 5- or 6-parted. Ovary ovoid, 1-celled ; stigmas elon- 

 gated and acuminate, spreading or recurved, glandular-pubescent. 

 Drupe with thin flesh, globular, smooth. Flowers axillary, solitary 

 or in pairs, dull greenish-yellow. 



1. C. OCCident&lis, L. Leaves obliquely lance-ovate, acumi- 

 nate, sharply serrate ; drupes yellowish-green. 

 WESTERN CELTIS. Hack-berry. Sugar-berry. Nettle-tree. 



Stem 20 to 60 feet, or more, in height. Leaves 2 to 4 or 5 inches long, roughish 

 and somewhat coriaceous ; petioles % to % of an inch in length. Flowers small , 

 on pedicels % an inch to % in length. Drupes about % of an inch in diameter, of 

 a sweetish taste. 

 Hob. Great Valley, and slaty hills: rare. FL May. Fr. Sept. 



Obs. There is a small form of this, occasion aly found on our 

 slaty hills, which seems to be the C. pumila, of PURSH. There is 

 also one of large size, with larger and coarser leaves, which has 

 been taken for C. crassifolia, of LAMARCK ; but that species does 

 not appear to be very distinctly denned. Perhaps they may both 

 be nothing more than varieties of C. occidentalis. 



ORDER LXXXVI. SAURURACEAE. 



Herbs, aquatic or marsh ; stems jointed; leaves alternate, entire, with sheathing 

 stipules adnate to the petioles ; flowtrs perfect, destitute of calyx, or other envelopes ; 

 gtamens 3 to 6, or more; anthers introrse; ovaries 3 to 5, more or less connate; 

 ttigmas recurved; seeds few; embryo minute, cordate, in a little sac at the apex of 

 the albumen. 



363. SAURITRUS, L. 



[Or. Sauros, a lizard, and Oura, a tail ; in allusion to the tail-like raceme.] 

 Stamens 4 to 8, usually 6, naked, hypogynous ; filaments long and 

 distinct. Fruit follicular, the carpels somewhat fleshy, united at 

 base, indehiscent, or opening along the ventral suture ; seeds ascend- 

 ing, usually solitary. Perennial: flowers pedicellate, each from the 

 axil of a small bract, and crowded in a subterminal virgate pedun- 

 culate white raceme. 



1. S. cernuus, L. Leaves sagittate-cordate, acuminate, petio- 

 late ; summit of the raceme at first nodding. 

 NODDING SAURURUS. Lizard's Tail. Breast-weed. 



Rhizoma creeping, thick and porous. Stem 1 to 2 feet high, leafy, forked above, 

 angular, emoothish. Leaves 4 to 6 inches long, glaucous beneath ; petioUs 1 to 

 2 inches in length, somewhat clasping at base. Jtaceme 3 to 6 inches long, very 



