—21 — 
Range and Santa Cruz Mts., California. It seems to be rare and confined to 
the Pacific Coast. 
Stations: California: Santa Monica Range; Mt. View Landing; Los 
Gatos. 
Ramalina yemensis (Ach.) Nyl. 
Synonymy: Ramalina fraxinea @ yemensis Ach. Lich. Univ. 602. 1810. 
Ramalina yemensis Nyl. Recog. mono. Ram. 144. 1870. 
Ramalina laevigata Fr. Syst. orbis. veget. 283. 1825. 
Type: In the Acharian herbarium, Universitetets Botaniska Institution, 
Helsingfors, fide Dr. Fred. Elfving. 
Type locality: “Yemen Arabiae Forskohl.” 
Original description: “laciniis elongatis angustis linearibus subsimplici- 
bus utrimque laciniusculis; apotheciis minutis subsessilibus marginalibus, disco 
piano albissimo pruinoso. ” l. c. 
Figure: Zahlbr. Nat. Pflanzen-Fam. Engl. & Prantl. PI. 2/5, /. F. 1907. 
Diagnosis: Thallus caespitose, compressed, expanded, membranaceous , 
rugose, apothecia small, lateral, spores straight. 
Description: Thallus caespitose (max. length 6 cm.) membranaceous , 
stramineous to virescent; cortex rugose; laciniae compressed, lanceolate (max. 
width 8 mm.), apices acute. Apothecia common, lateral, small, concave or ap- 
planate, marginate (max. diam. 1 mm.), disk buff. Spores ellipsoid, straight or 
substraight, 
Contingent phases: (a) lobes wide (13 mm.), ( = R. yemensis f. latior 
Nyl. “Sporae ei longit, 0.012-25 millim., crassit 0.005-7 millim.”) 
Substratum: On trees. 
Distribution: In the lower 
Austral Zone of che Southwestern 
States and Mexico. 
Stations: Louisiana: St. Mar- 
tinsville. Texas: Austin; San An- 
tonio. New Mexico. Wyoming: ? 
Mexico: Japotlan; Monterey; Sierra 
Madre; Honez Station. 
Observations: This species, dis- 
tinguished from the preceding by its 
lanceolate laciniae, minute apothecia, 
and straight spores, was referred by 
Tuckerman to R. laevigata Fr. and has 
been recorded from California by Dr. Hasse. The type of laevigata has apparently 
been lost, fide Dr. O. Juel, and the original description is not at all diagnostic, 
especially in its statement “apothecioium margine crenato. ” Mr. Merrill re- 
cords Nvlander’s varieties sublinearis and latior from Mexico. 
Exsiccati: No. 81. Lich. Boreali-Amer., Cummings, etc. Austin, Texas, 
Mar. 1894. Prof. F. W. Simmonds (called R. laevigata Fr.). 
No. 23. Mex. Lich., Pringle. Monterey, Mexico. 
Fig. 3. — -Distribution of Ramalina yemensis. 
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