500 OKDEE CIX. UETICACE^. 



Genus IX.— PHYLLAN'THUS. L. 19—15. 

 (From the Greek pliuUon, a leaf, and antJios, a flower.) 



Monoecious. Sterile florets ; perianth 5 — 6-parted, filaments 

 6, united. Fertile florets ; perianth 5 — 6-parted, paracorolia 

 a 12-angled margin. Styles 3. Capsule 3-celled, 3-seeded. 



1. P. Carolinen'sis, ("Walt.) Steyn erect, with alternate branches, 

 glabrous. Leaves alternate, oval, obtuse, smooth, distichous. Floicers 

 axillary, nodding, fertile and sterile intermingled. Perianth colored at 

 the base. — %. tSept. — Oct. Damp soils. 10 — 12 inches. 



Genus X.— PACHYSAN'DRA. Mich. 19—4. 

 (From the Greek paehus, thick, and andros, a stamen.) 



Perianth 4-leaved. Stamens 4. Filaraents sub-clavate 

 Styles 3. Capsule 3-horned, 3-celled, cells 2-seeded. 



1. P. procum'bens, (Mich.) Stem procumbent and simple. Leaves 

 alternate, pubescent, crenate, toothed, oval. Floxoers in spikes, nearly 

 radical, the lower ones fertile, the upper ones sterile, all bracteate. Pe- 

 nan^/i minute, ciliate. Co/^sw/e finely pubescent. — If. June. Mountains. 



Genus XL— BO'RYA. Willd. 20—2. 

 (In honor of Bory de St Vincent.) 



Dioecious. Sterile florets ; perianth 4-leaved. Stamens 2 

 — 3. Fertile florets ; perianth 4-leaved, unequal. Stigma cap- 

 itate. Fruit 1 -seeded. 



1. B. PORULo'sA, (Mich.) Somewhat shrubby, rarely spiny. Leaves 

 coriaceous, opposite, oblong-lanceolate, sessile, dotted underneath, and 

 ferruginous, margins revolute. 



Order CIX.— URTICA^CE^. {Nettle Family.) 



Floioers monoecious or dioecious, scattered or clustered. Peri 

 anth membranaceous, lobed, persistent. Stamens definite, 4 — 5, 

 inserted into the base of the perianth and opposite its lobes. 

 Ovary superior, simple. Ovule solitary, erect. Stigma simple. 

 Fruit an indehiscent nut, surrounded by the perianth. Usually 

 herbaceous plants, with alternate leaves, often covered with 

 stings. 



Genus I.— UR'TICA. Tourn. 19—4. 

 (From uro, to burn, from Its stinging.) 



Floioers usually monoecious. Sterile florets ; perianth of 4 

 leaves. Stamens 4. Fertile florets ; perianth 2-leaved. Stig- 

 ma 1. Seed 1, shining. 



1. U. pu'mila, (L.) Stern usually erect, succulent. Leaves opposite, 

 decussate, ovate, acuminate, serrate, 3-nerved, lower ones op rather 



