• ORDER 0X1. MORACKJS. 503 



nearly sessile. Stamens 5 — 7. Stigmas purple. Buds tomentose. 

 Fruit pubescent. — $. Feb, — March. In fertile lands. 20 — 30 feet. 



Slippery Elm 



3. U. ala'ta, (Mich.) A middle-sized tree or shrub, with a cork-like 



excrescence on opposite sides of the branches. Leaves nearly sessile, 



oblong-lanceolate, doubly serrate. Samara pubescent, ciliate. — *> . Feb. 



March. Fertile soils. 10 — 30 feet. Whahoo. 



Genus II.— PLAN'ERA. Mich. 5—2. 

 (In honor of John Planer, a German botanist} 



Flowers perfect. Perianth campanulate, 3 — 5-cleft. Sta- 

 mens 5. Stigmas 2. Nut 1 -seeded, roughened. 



1. P. GMELi'Nr, (Mich.) A middle-sized tree. Leaves ovate, acute, 

 glabrous, serrate. Flowers axillary, generally by threes. Perianth 

 3 — 5-cleft. Stamens 3 — 5. Stigmas 2, plumose. Nut roughened. — *> . 

 Feb. — March. Kiver swamps. 30 — 40 feet. 



Genus III— CEL'TIS. L. 23—1. 

 (An ancient name for Lotus.) 



Flowers perfect. Perianth 5 or G parted. Stamens 5 or 6. 

 Styles 2, expanding. Drupe small, purple. 



1. C. occidenta'lis, (L ) A large tree. Leaves ovate, acuminate, ser- 

 rate, unequal at the base, pubescent beneath. Flowers small. Fruit a 

 small berry, with a sweet pulp. — ^ . April — May. Rich soiK 60 — SO 

 feet. Beaver-wood. Sugarberrytree. 



Order CXI. — MORA'CEJS. (Artocarpacece.) {Mulberry 

 Tribe.) 



Flowers monoecious, in aments or heads. Perianth usually 

 divided, sometimes tubular or entire. Stamens 4, straight. 

 Ovary 1 or 2 celled, with a suspended ovule. Style 1, fiiiforra. 

 Stigma bifid. Fruit a fleshy receptacle, covered by numerous 

 nuts. Seed suspended, solitary. Trees or shrubs. 



Genus I— MO'RUS. Tourn. 19—4. 

 (Morea, the Greek name of mulberry.) 



Flowers monoecious or dioecious, in spikes. Sterile florets 

 with a 4-parted perianth ; stamens 4. Fertile florets in dense 

 spikes, with a 4-parted perianth, which becomes succulent, en- 

 veloping the achenium, and forming an oblong, juicy, edible 

 fruit. Trees with milky juice. 



1. M. al'ba. Monoecious. A small tree. Leaves deeply cordate, un- 

 equal at the base, unequally serrate, nearly glabrous. — ^ . May. 

 Introduced. While Mulberry. 



2. M. ru'bra. Dioecious. A large tree. Leaves cordate, ovate, acu- 

 minate, serrate, scabrous, pubescent beneath. Perianth 4-parted, be- 

 coming juicy. — ^. March. Rich soils. 20 — 60 feet. Red Mulberry. 



