ENGELMANN — NORTH AM. SPECIES OF JUNCUS. 491 



which otherwise exhibits the same structure, always marked 

 with regular transverse reticulation. 



Pag. 443. J. effusits. Several forms are distributed in 

 Herb. norm. ; the common one from Michigan, 7, and South 

 Carolina, 8, and an unusually slender one, 9, from the Cali- 

 fornian mountains, where the common one also grows. The 

 western botanists find in the saltraarshes near Sail Francisco 

 a brown flowered variety, which may be distinguished as var. 

 bruneus; inflorescence somewhat looser and fastigiate, Herb, 

 n. 10, or more compact, ib. 11 ; other differences, if they ex- 

 ist, have escaped me. 



J. patetis was distributed by Dr. Kellogg in Herb. norm, 

 in two forms; 12 is a tall plant with loose panicles of green 

 flowers, 13 a low (8-15 inches high) rigid form with a more 

 compact darker colored inflorescence. 



Pag. 444. J. Smithii : rhizomate longe repente ; caulibus 

 (li-2-pedalibus) gracilibus teretibus farctis siccis striulatis 

 basi vaginis fusco-rufis breviter aristatis instructis ; paniculse 

 laxae vix compositag paucitiora3 spatha longissima; sepalis 

 aequilongis, exterioribus lanceolatis acutatis, inteiioribus obtu- 

 sis stamina 6 fere duplo superantibus; antheris oblongis fila- 

 mentum requantibus ; ovario ovato in stylum brevem attenu- 

 ato cum stigmatibus eo aequilongis fere incluso ; cetera vide 

 p. 444. 



Found abundantly by Messrs. Smith, Porter and Leidy on 

 Broadmountain, Pennsylvania (Herb. norm. 15), where it 

 had been discovered by the former the year before ; also in 

 Eausch's Gap, Lebanon county. — The very complete speci- 

 mens sent by these gentlemen enable me to complete the 

 history ot this, thus far, very rare plant, which proves to be 

 intermediate befween J. Bulticus and J. filiformis, with the 

 rootstock of the former and the inflorescence of the latter, 

 and with almost the seeds of J. arcticus. Seeds 0.32-0.38 line 

 long, with short and broad appendages and a distinct rhaphe, 

 distinctly but somewhat irregularly reticulate and partly also 

 lineolate ; epidermis easily removed after soaking. 



J. setaceus ; a larger and a smaller form from South Caro- 

 lina have been distributed in Herb. norm. 14 by Mr. Ravenel; 

 internodes of the creeping rhizom short, steins cespitose. 



Pag. 445. J. arcticus is more closely allied with J. Balti- 

 cus and Smithii than with J. Drummondii ; more specimens 

 obtained from the coasts of the north Pacific show that the 

 var. Sitchensis is not rare there, and extends to Kamschatka; 

 its characters hold their own well. 



J. Drummondii, Californian Alps, Bolander, Hb. norm. 16. 



Pag. 446. J. Parryi; a form with the interior sepals ob- 

 tuse aud much shorter than the exterior ones, which are as- 

 long as the capsule, was found by Mr. Bolander on alpine 

 meadows, California. 



[April, 1868.] 32 



