CONOCEPHALUM 51 
Marchantia Ludwigii Schwaegr. (?) Hist. Musc. Hep. Prod. 33. 
1814. 
Fimbriaria gracilis Lindb. Not. ur Sallsk. pro Fauna et Flora 
Fenn. 0: 282. 1868. 
Thallus simple or once dichotomous, linear-obcuneate; some- 
times oblong ог obovate, 4-10 mm. x 1.5-3 mm., rather dis- 
tinctly porose and areolate, canaliculate or somewhat broadly con- 
cave, dark purple underneath, 25-35 cells thick in median parts, 
with deep air-chambers, the narrow, purple or concolorous, undu- 
late-crenate margins ascending, or, on drying, sometimes erect and 
connivent, scales purple, reaching the margin or now and then 
projecting a little beyond: monoicous: antheridia few, immersed 
in the thallus just posterior to the base of the 9 branch, loculi 
with papilliform ostioles: 9 receptacles maturing 1—4 (mostly 3) 
sporogonia, subhemispherical, 1.5-3 mm. in diameter, nearly 
smooth, becoming rugose in drying, naked beneath, the obscurely 
defined lobes with а thin membranous border ; peduncle from the 
apex of the thallus, 10-40 mm. x .3-.5 mm., light brown to brown- 
ish-purple, naked, surrounded at the base by a few, often inconspic- 
uous scales or paleae ; pseudoperianth white, 5-12- (mostly 8-) 
cleft, the segments early becoming free, most frequently somewhat 
inclined together, sometimes spreading : capsule quite regularly 
circumscissile above the middle ; spores yellow or slightly brown, 
48-64 и, narrowly margined, areolate-reticulate or with shallow 
alveolae, Ше meshes 5-8 across each face, with somewhat thick- 
ened walls and angles; elaters 150—275 И X 7-15 /^ 2—4-spiral, 
more or less attenuate at the ends, commonly flexuous or con- 
torted, sometimes branched. 
Near Mineral King, Tulare Co. (Coville and Funston, Death 
Valley Expedition, nos. 1420 and 1510, August 1891). 
8. CONOCEPHALUM* Wigg. Prim. Fl. Hols. 82. 1780. 
pores easily visible to Ше unaided eye; chlorophyll-bearing 
* We have been unable to verify this citation. A transcription of dea wate 
nosis is given by M. Auguste Le Jolis ( Мет. Soc. nation. Sci. nat. et math. Cherbourg 
29: 125. 4). 
T See footnote under Reboulia. 
