NpyiTLE FAMTLV 



427 



1. Llmus. — Trees with distichous leaves; perfect flowers in 

 clusters ; bell-shaped, 4 — 5 cleft, persistent perianth ; styles 2 ; 

 fruit a rounded, i-seeded samara. 



2. HuMULUS. — Twining plants with opposite lobed leaves; 

 dicecious flowers ; staminate flower with 5-kaved perianth and 5 

 s ■aniens ; carpellate flowers in a catkin of large bracts ; styles 2. 



3. Urti'ca. — Herbs with opposite leaves' d^nd stinging h;iirs ; 

 flowers imperfect ; perianth 4 — 5-cleft : style v. 



4. Parif.taria. — Herbs with scattered, exstipulate leaves ; poly- 

 gamous, 4-merous //(i7i'tM ; style i. 



1 Ulmus (Elm). — Trees with distichous, oljlique, rough leaves, 

 with stipules falling early : flowers perfect, in clusters, appearing 

 before the lea\"es ; perianth bell-shaped, 5- rarely 4-cleft, persistent ; 

 stamens 4 — 5 : j7i7fi' 2 : ovary superior, i — 2-chambered, with an 

 ovule ill each chamber ; jriiit a thin, membranous, 

 I -seeded samara. (Name, the Classical Latin 

 name of the genus.) 



1. U. sedbra (\Vych Elm). — A large tree, with 

 furrowed bark ; few suckers ; downy twigs; large, 

 irregularly doubly serrate, obliquely cordate, 

 acuminate, thick leaves, with short stalks ; samara 

 orbicular, with the seed-cavit\' below the middle. — 

 ^\'oods, chiefly north of the Trent ; commoii. — 

 Fl. March, April. Perennial. 



2. U. glabra. — Usually a somewhat smtiHer tree, 

 producing numerous suckers ; twigs nearly smooth : 

 leaves small, thin, shining and nearly glabrous, 

 except in the angles of the veins on their under 



surfaces, with long stalks ; samara obovate, with the seed-cavity 

 near the upper end. Chiefly south of the Trent. — Fl. March — May. 

 Perennial. 



There are also a number of other forms- of elm, apparently 

 liybrids between these two, of which the best-known is t'. 

 siirciilosa, the English or Hedgerow Elm, a lofty tree, often send- 

 ing out horizontal lower branches, producing abundant suckers, 

 downy branches and leaves, with long petioles, aud numerous 

 obovate samanv, like those of U. glabra, but not perfecting its seed. 



2. HuMULUs (Hop). — Twining herbs with opposite lobed leaves 

 with connate stipules ; minute, dicecious flowers, the staminate in 

 panicles, with pma?;//! of 5 imbricate leaves! and 5 stamens; the 

 carpellate 2 together in the axils of numerous bracts in a catkin ; 

 styles 2. (Name said to be from the Latin, humus, rich soil, in 

 which the plant flourishes.) 



FRUIT OF ELM. 



