Nov. 1907] Two New Hypogaeous Secotiaceae 239 



S. coarctatiim B. & C, to which species a specimen from Texas 

 has been referred by Lloyd (cf. under 5. tenuipes below) and 



5. macrosporum Lloyd, from Texas (Lloyd, Myc. Notes, p. 139, 

 pi. 13, f. 12-16, 1898). 



It will be seen from this list that there are only four species, 

 in all probability, of Secotium in our flora and neither of two de- 

 scribed below are likely to belong to any one of these. They have 

 been compared as carefully as possible with all the descriptions 

 and figures so far as known to me and seem reasonably, if not 

 amply, distinct. 



Secotium tenuipes sp. nov. — Gregarium ; peridio subglo- 

 boso aut late ovoideo, subumbonato, basi plus minusve truncato et 

 velo horizontali exiguo evanescente arachnoideoque instructo, 

 1-2 cm. lato et 1-1.5 cm. alto, luteo-fusco ad fusco, glabro, car- 

 noso ; gleba a stipite fere libera sed ad apicem extremam lamelli- 

 formiter decurrente, lacunis sinuosis aut regulariter aut indef- 

 inite, labyrinthico marginibus lamelliformibus, luteo-fusca, sine 

 venis propriis ; stipite longo aut brevi (ad 2 cm.), gracile, evolvato, 

 striato, per glebam libere percurrente sed ad apicem in glebam 

 expanso; basidiis 2-4-sporiferis, sterigmatibus distinctis subintu- 

 mescentibusque ; sporis ellipticis aut ovoideis, 12-1611 longis, 8-12/1 

 latis, luteofuscis, levibus. In terram argillaceam sub foliis Euca- 

 lyptus et Quercus prope Berkeley et San Francisco, Californiam. 

 Plate io7,^f. 4-8. 



This species is not uncommon under the leaves of Euca- 

 lyptus Globulus and of some other trees, particularly oaks, in 

 the vicinity of the Eucalyptus, both in the neighborhood of Berk- 

 eley and of San Francisco. When first uncovered it looks very 

 much like a Bolbitius, or a Coprinus, especially when the lamelli- 

 form gleba is exposed more than usual at the base. This 

 aspect is very well shown in the figure on plate 107. It is 

 usually four to five centimeters in height, with a longer or shorter 

 stipe, an evanescent and somewhat arachnoid veil, and the whole 

 plant is a yellow-brown to a dark-brown color. They generally 

 appear more or less bent, flattened under the weight of the layer 

 of leaves which entirely conceals them from view until exposed 

 by the use of the rake. They occur scattered over a considerable 

 area, as a rule, in twos or threes together and seem to prefer 

 slight slopes which are well drained and yet retain moisture 

 longer than the neighboring levels. There is little trace of any 

 structure which might be supposed to represent a volva, but the 

 transverse veil while scanty and arachnoid, is still distinct in the 

 early sta.o^es of adult development. In structure of the gleba, 

 the specimens seem to vary considerably. In some, the chambers 

 are very regular in shape and position and this is particularly to 

 be seen in a transverse section of what we may call the pileus. 

 Even on the margins which abut on the stipe and the lower ex- 



