158 102. Echinoch. 10. GRAMINE^. Plend.pk. 



Corn-fields by rivers ; annual ; August. 



Culm smooth ; leaves soft, broad, 7 or 9-rlbbed ; sheaths 

 smooth, bald ; ligula a yellow spot ; spike doubly branched, 

 green or purple ; peduncles flexuous ; locustce ovate, acute ; 

 spathelles either long-pointed or with a short bristle. 



|3. aristata. Bristle 8 or 10 times as long as the spa- 

 thelles. 



Fam.VI. 11. RESTIACE^. R. Brown. 



Perigonium free, 2 to 6-parted, rarely none; stamens 

 definite, 1 to 6, when 2 or 3 opposite to the lobes of the 

 4 or 6-parted perigonium ; ovary 1 or many-celled ; cells 

 1 -seeded; ovules pendulous; perifwp capsular or nutlike ; 

 seeds inverse, albuminous ; perisperra fleshy, same shape as 

 the seed ; coi'culum basillary, lenticular, on the outside of 

 the perisperm, opposite to the mnbilicus. — Ciihm herbaceous, 

 naked or sheathed ; leaves simple, slender ; sheaths cut, one 

 edge overlapping the other ; Jlowers aggregate, mostly di- 

 clinous ; bractecc distinct, 



I. 103. ERIOCAULON. Gronovius. Pipeworf. 



Head androgynous; hractca' 1 -flowered, outermost often 

 empty, involucrating; perigonium 4 or C-lobed ; lobes in a 

 double series; male in the centre; inner lobes of the pe- 

 rigonium connate below ; stamens 4 or 6 ; anthers 2-cened j 

 FJCMALE in the circumference ; inner lobes of the perigonium 

 distinct ; style 1 ; stigmata 2 or 3 ; capsule 2 or 3-celled, 

 2 or S-lobed, opening at the prominent angles ; seeds one 

 in each cell, pendulous. 



Eriocaulon seplangulare. - Seven-angled pipeworj. 



Scape streaked ; leaves cellular, compressed, swordshape, 

 bald, shorter than the scape; head globose; external hractece. 

 empty, bald ; inner bractece antl perigoiiium hairy, fringed 

 at the ti}) ; stamens 4. 



£iioc;iul()n scptangiilarc, IVitheriug Boi. Arr. 184. 

 Erioc;iulon dccanj^iilare, Tdghtfoot Fl. Scot. 569. 

 Nasmjthia ariiculata, IIiuls. Fl.Ang. 415. 



Lakes in the Hebrides; perennial; September. 



Herb reticulatcly cellular ; ?oo/i' simply fibrous, jointed; 

 scape erect, a span high, single, 7-angled, leafless; leaves 

 many, radical ; head hemispherical, white and black ; 

 bractece scariosc ; 7?o?t'fr snow-white with 2 black spots, 

 tip feathered ; anthers black.; capsule 2-cellcd. 

 7 



