238 
rarely producing offsets. The root fibres penetrate more deeply 
than do those of /. ovina, but are not so much branched. 
Meravow Sorr Grass, Holeus lanatus. According to Lawes & 
Gilbert the roots do not penetrate deeply, but form a dense mat 
just beneath the surface. 
MeEApow FoxtalIL, Alopecurus pratensis, according to Lawes & 
Gilbert, has a long deeply penetrating more or less vertical subter- 
ranean root-stock, from which proceed creeping offsets or stolons 
capable of giving off fibrils. In addition to the main vertical root 
fibres, there is usually close beneath the surface, a dense leash of 
horizontal fibrils. 
ORCHARD GRASS, Dactylis glomerata, according to Lawes & Gil- 
bert, has strong, stout fibrous roots, descending more or less verti- 
cally to a considerable depth, and together with other more hori- 
zontally disposed fibres matting the soil into a dense ball. The 
root-hairs, under favorable circumstances, are numerous, long and 
delicate. 
PERENNIAL RYE Grass, Loliwm perenne, according to Lawes & 
Gilbert, has much branched fibrous roots, which penetrate to a con- 
siderable depth and give off a dense network of root-fibrils near the 
surface. ‘The root-hairs are stoutish, sometimes short, numerous ; 
at other times very fine and intricate. 
TimotHy, Phleum pratense, according to Atwater, has roots 
which in Maine were traced 2 feet 4 inches deep, the depth of sur- 
face soil being 1 foot 5 inches. 
Rep Top, Agrostis vulgaris, according to Lawes & Gilbert has ex- 
ceedingly fine much branched roots, which descend to a depth of 
4 or 5 feet, and also form a mat just beneath the surface. The 
root hairs are very abundant in damp situations, forming a dense 
white cobweb-like mass, 
RoucH STALKED MEApDow Grass, Poa trivialis, according to 
Lawes & Gilbert, has closely matted minute fibrous roots, not pen- 
etrating deeply, but forming a dense mat beneath the surface, 
producing no underground Wffshoots, but developing, especially 
In moist weather, creeping branches from the base of the culms. 
SHEEP’S FEscun, Fescuta ovina, according to Lawes & Gilbert, 
is often provided with numerous fine creeping underground stolons. 
The root fibres are very numerous, fine, with but few hairs, 
branching in all directions and forming a very dense network just 
beneath the surface, thereby obtaining full possession of the soil to 
a depth of from 6 to 10 inches, but not usually penetrating more 
deeply. 
Sort Brome Grass, Bromus mollis, according to Lawes & Gil- 
bert, has stiff wiry roots not much branched, but sometimes very 
deeply penetrating, as they were traced on one occasion to a depth 
of 4 to 5 feet, having lost their wiriness and become fleshy. 
SWEET SCENTED VERNAL Grass, Anthozanthemum odoratum, 
according to Lawes & Gilbert, has fine, much branched, dense root 
fibres, forming a dense mat close to the surface, but not deeply 
penetrating. 
