CVII. GRAMINE^E. 
567 
Hordeum.~\ 
loaves lanceolate acuminato-euspidate. Arundo Phrngmites 
L. : E. B. t. 401.: Pam. Gr. t. 29. 
Abundant in ditches, margins of lakes, rivers, &c. If.. 7,8. — 
Culms 6 ft. or more high, usually erect, rarely prostrate and very long 
(20 — 40 feet) : Bromfield. Panicle large, purplish-brown, ultimately 
drooping. Glumes very unequal : lower ovato-lanceolate, many- 
ribbed ; upper twice as long, thin, membranous, obsoletely ribbed. 
As the flowers advance, the tufts of hair increase, at length becoming 
very silky. A variety is found abroad with only one perfect floret. 
b. Spikelels spiked , either quite sessile or shortly stalked, and 
arranged in a simple or compound spike or spike-like raceme. 
(Tab. IX. f. 42. e.f. g.) (Gen. 35—44.) 
* Spiltelets inserted on different sides of the common axis or 
rachis. Styles short. Stigmas thick, plumose. (Tab. IX. 
f. 42. e. /.) (Gen. 35—40.) 
f Rachis alternately grooved between the joints. 
35. F/lymos Linn. Lyme-grass. (Tab. VIII. f. 32.) 
Spikelcts in pairs from the same joint of the rachis, each with 
2 — 4 fertile florets. Glumes 2, collateral (both on one side of 
the spikelet), awnless. Glumellas 2, covering and usually in- 
corporated with the caryopsis. — Name: i\vpoQ, given by the 
Greeks to the Panic-grasses, but why is not known. 
1. E. aren&rius L. ( upright Sea L .); spike close erect, rachis 
flat not winged, florets as long as the lanceolate downy glumes. 
E. B. t. 1672: Pam. Gr. t. 64. 
Sandy sea-shores, frequent. 2/.. 7. — Rhizome extensively creep- 
ing in the loose soil. Culms 3 — 4 ft. high, glabrous. Leaves glaucous, 
involute, pungent. Spike 4 — 6 in. long. Spiltelets of about 3 flowers. 
Glumes 2, lanceolate, acuminate, downy. Outer ylumella resem- 
bling them, but broader ; inner bifid at the point. 
2. E. geniculdtus Curt, {pendulous Sea Z.) ; spike lax bent 
downwards, rachis winged, glumes subulate glabrous longer than 
the florets. E. B. t. 1583: Pam. Gr. t. 131. 
Near Gravesend, in a salt marsh : very rare. %. 7. — Apparently 
quite distinct from the preceding; but requiring careful examination 
in the only locality recorded for it in this country : it is said to have 
been likewise found in Holland. We possess a diseased state of 
E. arenarius, very like it gathered in Scotland by Mr. M‘Nab : Mr. 
Bentham indeed unites the two species. 
36. IIordeum Linn. Barley. (Tab. VIII. f. 33.) 
Spikelets in threes from the same joint of the rachis, 1—2 
usually neuter or barren: fertile ones with a perfect floret and 
