GRAMINA. 



401 



S66. KNAPPIA. 



1. minima. Very small. Root fibrous. 

 Stems numerous, a. 4, 5. Sand. Eng. 

 very rare. Fr. Nice. Pdm. 



Tribe VII. STIPJCEM 

 867. PIPTATHERUM. 



1. cserulescens. Cor. smooth. Awn fall- 

 ing short of glume. L. involuto-setaceous. 

 All the Ligules long, erose. p. 5. Calo. 

 hills, mdt. Fr. Carrara. Sic. 



2. paradoxum. Pan. few-flowered. Awn 

 tmce as long as glume. Pales hairy. L. flat. 

 All the Ligules short and truncate, p. 7. 

 Calc. woods. Nice. Prov. Carin. Cam. Monte 

 Baldo. Tivoli. 



8. Thomasii. " Culm geniculate at base. 

 L. convolute, smooth, narrow linear. Ligule 

 short, truncate. Pan. long, las, somewhat con- 

 tracted. Pedicels in half whorls, the lower 

 usually abortive. Glumes smooth, acuminate, 

 nearly equal. Awn terminal, straight, some- 

 what exceeding the spicule, p. Cape Corso 

 in Cors." — Duby. 



4. multifiorum. Pan. many - flowered. 

 Awn as long as glume. Pales smooth. L. 

 flat. Lower Ligule trimcate ; upper laciniate. 

 p. All the year. Walls and dry. mdt. Fr. 

 Italy. 



868. STIPA. 



1. pennata. Awn twisted below, feathery 

 above the upper knee, 12 inches long. Glumes 

 subulate, with a long, scariose point. Anthers 

 hairless, p. 6, 7. Bry hills. Fr. G. Sw. 

 Italy. 



2. juncea. Awn hairy throughout, «ioM# 3 

 in. long ; upper part straight, much longer than 

 the twisted lower. Glume subulate. Anthers 

 bearded. All L. setaceous. Upper Sheaths 

 not enlarged, p. 5. Dry hills, s. Fr. Lig. 



3. capillata. Awn about 6 in. long ; up- 

 per part finely pubescent, flexuose, more than 

 twice as long as the twisted and nearly smooth 

 lower. A broad Sheath embracing base of 

 panicle. p. 6, 7. Tiry hills and walls. 

 Nice. Cors. Rous. G. Sw. Aosta. 



armed with strong hairs. Inner Glume vil- 

 lous. Sheaths broad; upper generally cm- 

 bracing base of panicle, a. 4. Dry. Nice. 

 Cors. Rous. Civ. Vecchia. Tivoli. Sic. 



5. Aristella. Awn hispid, not twisted; 

 twice as long as rostrato-acuminate glume. 

 Fits, sessile. Anthers hairless. All L. involuto- 

 setaceous. p. 7- Dry rocky. Nice. n. e. 

 Italy. 



869. ARISTIDA. 



1. Adscensionis. Hairless. L. convo- 

 lute. Pan. long, branched, straight, subsecund. 

 Glumes unequal, subbidentate ; the larger about 

 equalling the floret. Awn rough, p. 5, 6. 

 Monte GaUo near Pal. 



870. ACHNATHERUM. 



1. Calaiua^rostis. Pan. diffuse. Pales 

 clothed with long hau's. Culms numerous, 

 leafy, p. 7, 8. Warm stony, s. Fr. n. It. 

 Carin. Apenn. 



4. tortilis. Pan. spike-like. Awn about 

 the lower part much twisted. 



^\ in. long ; 



Tribe VIII. AETJNDINACEM. 



871. ARUNDO. 



A. Spicules \-flowered, without rudiment. 

 Hairs from base of Tale. 



1. Calama^ostis. Pan. difiiise. Glumes 

 lanceolate, acute. Hairs exceeding florets. 

 Outer Pale half as long as glume, emarginate. 

 Awn very short. L. flat. Ligules large, acute. 

 p. 6-8. Wet. e. Eng. Fr. G. Sw. n. It. 



2. littorea. Pan. diffuse. Glumes lan- 

 ceolate, compresso-subulate at the tip. Hairs 

 exceeding floret. Avm terminal, about half as 

 long as outer pale. L. with involute margin. 

 Ligules large, acute, p. 7, 8. Sandy river- 

 sides. Fr. occ. Danube. Sw. adr. G. 



8. epigejos. Pan. straight, spreading. 

 Glumes nearly sessile, lanceolate, pointed. 

 Hairs exceeding pale. Awn equalling floret ; 

 from middle, or rather above middle, of pale. 

 Tip of outer Pale toothed. L. ronghish. Culm 

 smooth. Ligule elongated, p. 6, 7- occ. 



4. fcalleriana. Pan. difiuse. Glumes lan- 

 ceolate, acute. Hairs as long as pale. Awn 

 straight from below middle of pale, which it does 

 not exceed. L. flat. Culm smooth. Ligule 

 large, acute, p. 7, 8. Moist shade. Sw. occ. 



5. tenella. Pan. diffuse. Glrmies Ian- 



