GRAMINA. 



415 



** Jwn twice as long as Pale. 

 34. ^igantea. Pan. lax, nodding, widely 

 spreading. Spicules lanceolate. Fits. 5-8, 

 awned from below the tip. Awn flexnose. L. 

 lineari-lanceolate, hairless, p. 7- Shade. Not 

 in s. It. 



904. BROMUS. 



A. Inner Pale downy, not ciliate. Sp. 1-3. 



B. Inner Pale pectinato-ciliate. Outer Glumes 

 1 -nerved. Spicules broader upwards. 



i. Panicle nodding. Sp. 4-8. 



ii. Panicle erect. Sp. 9-13. 



C. Inner Pale pectinato-ciliate. Outer Glume 

 with 3 or more nerves. Spicules naiTower 

 upwards. 



i. Point beyond awn of outer Pale longer 

 than broad. Sp. 14-16. 



ii. Point broader than long. 



a. Edges of Pale of Fruit roUed in, not 

 covei'ing the floret above it. Sp. 17. 



b. Outer Pale ivith two terminal setas 

 besides the awn! Sp. 18. 



c. Without either of the preceding cha- 

 racters. 



* Awns straight. Sp. 19-33. 

 ** Awns twisted or recurved when 

 dry. Sp. 33-27. 



A. Inner Pale downy {not ciliate) on keels. 



1 . inermis. Pan. erect. Branches semi- 

 verticiUate. Spicules nearly terete, haii'less. 

 Pale obtuse. Awn very short or wanting. 

 Root creeping, p. 7, 8. Sides of streams, 

 Fr. Borders, G. Meadows, Sw. very rare. 

 Thickets, Lig. 



2. erectus. Pan. erect : branches semi- 

 verticiUate. Spicules lineari-lanceolate. Fits. 

 5-10. Awn half as long as acute, cloven, 5- 

 nerved pale. L. flat. Root-L. narrow, ciliate. 

 Ligule short, p. 6, 7. Rough pastures. 



3. asper. Pan. branched, drooping. Spi- 

 cules lineari-lanceolate, 7-9-flowered. Pale 

 somewhat 5-nei-ved, downy, longer than straight 

 awn. L. villous, flat. Ligule very short, p. 

 6, 7. Shade. 



B. Outer Glume \-nerved. Spicule hroader 



upwards. Inner Pale pectinato-ciliate. 



i. Paniple nodding when in flower. 



4. tectorum. Spicules linear. Awn straight, 

 as long as subulato-lanceolate pale. Inner 

 part of Culm pubescent, a. 5, 6. Dry. 



5. laxus. " Spicules drooping, compress- 

 ed, linear, pubescent. Awn shorter than pale. 

 L. lax, pubescent, ciliate. Resemhles B. sterilis, 

 but is perennial, p. Hills. Sax." — KuNTir. 



6. sterilis. Pan. nodding, nearly simple. 

 Spicules oblongo-cuneifonn, hardly drooping 

 separately. Outer Pale subulato-lanceolate, 

 shorter than straight awn. Cnlm hairless. 

 L. downy, a. 6, 7. Walls and barren. 



jS. juhatus. Ten. Hairless. 



7. Gussonii. " Pan. subcompound, ra- 

 ther lax, nodding at top. Branches long, 

 somewhat whorled. Spicides about 6-flowered, 

 very thick, very rough. Awn straight, twice as 

 long as the outer lanceolate, deeply cloven 

 pale. Inner Pale acuminate, about half as 

 long as outer, a. 5, 6. Woods and hedges. 

 SicT Cors. It."— Parl. 



8. pilosus. " Pan. dense, nodding. Spi- 

 cules oblong, 6-flowered, hirsute. Awn very 

 long. Seeds flat, curved at back. b. s. 

 Eur."— KuNTH. 



ii. Panicle erect lohen in flower. 



9. diandrus. Pan. nearly simple. Spi- 

 cules lineari- cuneiform. Pale subulato-lanceo- 

 late, with 2, close, marginal ribs and one less 

 distinct between these and the keel. Awn 

 straight, as long as pale. Culm hairless. 

 Stamens 2. a. 5, 6. Dry barren. Rare in 

 England. 



i8. polystachyos, DC. Pan. more branched. 

 Spicules crowded, linear, 8-12-flowered. 

 Borders. Mtp. Rons, Bord. Nantes. 



7. scaberrimus. Ten. Pan. more branched. 

 Plant larger. Outer Pale equally 7- 

 nerved. 



10. rigidus. " Pan. and Pedicels erect. 

 Spicules oblongo - cuneiform. Fits, narrow 

 lanceolate. Awn straight, longer than pale. 

 Upper part of Cnhn downy, a. s. Eur." — 

 KuNTU. Far. of diandrus ? 



11. fasciculatus. " Pan. dense, simple. 

 Spicules linear, about 12-flowered, nearly ses- 

 sile. Awns about as long as pale, somewhat 

 twisting and recurved when dry. Outer Pale 

 lineari-lanceolate, with 2 setaceous teeth ; in- 

 ner acuminate. L. nearly hairless, a. 4, 5. 

 Dry hills. Sic." — Parl. 



12.rubens. Pan. top-shaped, crowded. Spi- 

 cules villous, lineari-lanceolate, 7-12-flowered. 

 Awn straight, longer than pale. Teeth of 

 outer Pale fringed, a.. 4, 5. Dry coasts. 

 Mediterranean. 



