BIVERTICILLATA-SYMMETRICA 637 



NRRL 1066, received in 1941 from Dr. R. M. AMielden, Harvard Uni- 

 versity, is regarded as representative of the variety, since it still produces 

 limited nimibers of dark red sclerotia. Even in this strain, however, a re- 

 duction in the number of sclerotia produced has become clearly evident 

 over the last few 3'ears. Both of these cultures tend to develop funiculose 

 colonies and show elhptical to subgiobose conidia with walls smooth or 

 nearly so. Examined today, and without reference to original cultural 

 appearances, both strains would be regarded as representing members of 

 the P. funiculosum series. XRRL 1132, cited as a variant strain of P. 

 Juniculosum (see p. 619) produces dark sclerotia in old cultures strikingly 

 similar to those seen in NRRL 1066. 



PeniciUium rubriim Stoll, in Beitrage zur morphologischen und biologischen 

 Charackteristik Penicilliumarten, Wurzburg, p. 35, Taf. I, fig. 7, Taf. 

 Ill, fig. 3, Taf. IV, fig. 4. 1904. See Thom, U. S. Dept. Agr., Bur. 

 .^im. Ind., Bui. 118, p. 39, fig. 7. 1910; and The Penicillia, p. 476. 

 1930. 



Colonies on Czapek's solution agar growing restrictedly, attaining a 

 diameter of 1 to 2 cm. in 12 to 14 days at room temperature, consisting of a 

 basal felt up to 1 mm. deep and conspicuously furrowed in some strains, 

 in others much thinner and almost plane, usually more or less zonate, de- 

 veloping abundant conidial structures throughout the colony or in localized 

 areas, usually heaviest near the colony margin, conidial areas in yellow to 

 gray-green shades near pea green to sage green (Ridgway, PI. XL VII) 

 with non-sporulating or lightly sporulating areas usually showing orange- 

 red coloration from pigmented aerial hyphae; exudate usually limited in 

 amount, in small droplets, reddish to bright red in color; odor indistinct; 

 reverse bright orange-red to cherry red with surrounding agar colored in 

 lighter tints of the same shades; conidiophores up to 200iu or more in 

 length by 2.2 to 3.0m, '^vith walls smooth or occasionall}'' appearing some- 

 what granular, arising from the substratum or from creeping or aerial 

 hyphae sometimes more or less funiculose; penicilli biverticillate and sym- 

 metrical, usually consisting of a terminal verticil of 5 to 10 metulae, meas- 

 uring about 8 to 10/x or even 12/x by 2.0 to 2.o/x; sterigmata lanceolate with 

 apices tapered in the manner characteristic of the group, in verticils of 

 5 to 8, mostly 10 to 12/x by 2.0 to 2.2ju, in individual strains longer or 

 shorter; conidia smooth-walled, variable in dimensions, from strongly el- 

 liptical 3.0 to 3.5m b\' 2.0 to 2.5m in some strains, to ovate or subgiobose 2.2 

 to 2.8m b}' 2.0 to 2.5m in others. 



Colonies on steep agar growing somewhat faster, up to 3.0 cm. in 2 weeks, 

 similar to the above in pattern and texture, but often colored in lighter 

 and duller shades and sometimes appearing tufted or funiculose in central 



