ENGELMANN — NORTH AM. SPECIES OF JUNCUS. 495 



plant has been named. — Nearly allied to the last but differ- 

 ing in many striking points, this little species represents a 

 glomerule of a few lines in diameter, pushing out in all direc- 

 tions a number of thread-like leaves; these are 6-10 lines 

 long, and %-\ line wide ; the short terminal heads are quite 

 loose, the flowers on such distinct peduncles that one would 

 be inclined to consider them as single, if the pair of bracts 

 were not wanting which always surround the base of sin- 

 gle flowers in this genus ; the lowest axils of a branch often 

 produce longer peduncles, elevated above the glomerate 

 mass, but shorter than the leaves, and bearing small heads, 

 usually of two flowers only. Flowers pale green and whitish, 

 and, especially the capsule, of very delicate structure, l|-2 

 lines long; seeds 0.25 line long, 1| diameters equal to the 

 length, similar to the seeds of the last species, but with much 

 more prominent dark ribs, 4 of which are visible on the side. 



Pag. 452. J. repens, Hb. n. 29, South Carolina, Jtavenel. 



J.falcatus; add: capsula sepala subaequante ; seminibus 

 lanceolato-ovatis epidermide plus minus producta subcauda- 

 tis irregulariter costato-reticulatis, areis elongatis lsevibus. — 

 Sandy soil near San Francisco, Kellogg, Bolander, Hb. n. 

 40. — Ripe seeds 0.35-0.40 line long, length equal to 2 or 2* 

 diameters; tips slightly or rarely considerably elongated, or 

 the upper one wanting; surface palish and shining, with a 

 thick rather loose epidermis, the cells of which correspond 

 with the reticulation of the seed. — A form from the mouth 

 of the Columbia, Douglas, communicated by Dr. Hooker, has 

 an obtuse capsule and thick ovoid seeds. — The differences 

 between this and what 1 have named J. Tasmanicus, p. 453, 

 note, seem to be almost too slight to be of specific value. 



Mr. Bolander sends "from sphagnous swamps near Mendo- 

 cino, California, a form which may be distinguished as var. 

 paniculatus ; analogous to the paniculate forms of J. phwo- 

 cephalus and others; the heads of the simple or somewhat 

 compound panicle are about 5-flowered ; Hb. n. 41, not yet 

 in bloom in May ; no stipular appendages at the base of the 

 leaves. Maturer specimens would be desirable. 



Pag. 453. 28. b. J. obtusatus, n. sp. : rhizomate repente 

 stoloniformi ; caulibus (spithameis) erectis laevibns plerumque 

 1-foliatis folia linearia plana tenuia fere aequantibus; capitulis 

 pauci- sou pluri-floris paucis in paniculam simplicem dis- 

 positis; floribus minoribus virescentibus extusleviter scabrel- 

 lis pedicellatis ; sepalis ovatis aequalibus, exterioribus saepe 

 cuspidatis, interioribus obtusissimis capsula ovata obtusa bre- 

 vissime mucronulata 3-loculari multo brevioribus ; staminibus 

 6 dimidia sepala superantibus ovarium obtusum cum stylo 

 breviore aequantibus; stigmatibus elongatis exsertis; semini- 

 bus ovatis obtusis seu vix apiculatis reticulatis. 



Near the Big Tree Grove, Mariposa, California, growing in 



