MORCHELLA 237 



Pileus bell-shaped. 3. Verpa. 



Pileus saddle-shaped or iriegularly subglobose. 4. Elvela. 



Pileus columnar. 5. Underwoodia. 



1. MORCHELLA (Dill.) Pers. Tent. DIsp. Fung. 36. 1797. 



Morchella Dill. App. Cat. PI. 74. 1719. 

 Phalloboletui Adans. Fam. PI. 9. 1763. Hyponym. 

 Morilla Quel. Ench. Fung. 270. 1886. 

 Phalloboletus Kuntze, Rev. Gen. PI. 2: 864. 1891. 



Pileus subglobose or elongated, obtuse or acute at the apex, 

 the margin closely adnate or rarely free from the stem at the 

 base, the surface irregularly costate, the rounded or elongated 

 pits entirely lined within by the hymenium; the ribs irregularly 

 anastomosing; hymenium yellow to brown; asci cylindric or 

 subcylindric, usually 8-spored; spores ellipsoid, smooth, hyaline 

 or faintly colored; paraphyses few, usually stout. 



Type species, Phallus esculentus L. 



Pileus adnate to the stem at the base. 



Ribs of the pileus similar in color to the interior of 

 the pits or lighter. 

 Pileus large, reaching a length of 4-8 cm. at 

 maturity. 

 Pits large, usually shallow; ribs thin; stem 



strongly enlarged at the base. 1. M. crassipcs. 



Pits small, deep; ribs thick; stem only slightly 

 enlarged at the base. 

 Pileus subglobose or only slightly elongated. 2. M. esculenta. 

 Pileus elongated or strongly attenuated up- 

 wards. 3. M. conica. 

 Pileus small, not exceeding 2-3 cm. in length. 4. M. deliciosa. 

 Ribs of the pileus much darker than the interior of 



the pits, becoming smok>'-brown. 5. M. angusticeps. 



Pileus free from the stem at the base. 6. M. hyhrida. 



1. Morchella crassipes (Vent.) Pers. Syn. Fung. 621. 1801. 

 (Plate 35.) 



Phallus crassipes Ventenat, Mem. Inst. 509. 1798. 

 Phalloboletus crassipes Kuntze, Rev. Gen. PL 2: 865. 1891. 



Pileus usually elongated and often subconic, reaching a 

 length of 6-8 cm. and a diameter of 5-6 cm.; pits roundish or 

 irregularly elongated, reaching a diameter of 1 cm., yellowish 

 within; ribs irregularly anastomosing, thin, often sharp-edged; 

 stem stout, reaching a length of lO-ll cm. and a diameter of 

 5-6 cm. at the base, tapering upwards to a diameter of 4 cm., 

 yellowish or whitish, more or less lacunose, or nearly even, 



