Part 1, 1906] 



TILLBTIACEAK 



59 



13. Urocystis Hypoxyis Thaxter, Ann. Rep. Conn. Agr. Exp. 



Sta. 1889: sub pi , 2, 1890. 



Sori in the flowers, more or less distorting and destroying the inner parts, often ex- 

 tending down on pedicels and peduncles for a short distance, somewhat irregular, oblong, 

 about 1-2 cm. in length, upon rupture of protecting parts disclosing a purple-black dusty 

 spore-mass ; spore-baUs chiefly ovoid to spherical,' 25-60 \i in length ; sterile cells reddish- 

 yellow, completely covering the spores, ovoid, about 9-14 /^ in length ; spores reddish- 

 brown, polyhedral to subspherical or spherical, occasionally ovoid to oblong, 1-8, chiefly 

 3-5, in a ball, usually 13-16 }i in length. 



On Amaryllidaceae : 



Hypoxis hirsuta {H. erecia)^ Connecticut, Massachusetts. 

 Type locality : New Haven (West Rock Park), Connecticut, on Hypoxis erecta {H. hirsuta). 

 Distribution : Connecticut and Massachusetts ; also in South America. 

 Illustration: Ann. Rep. Conn. Agr. Exp. Sta. 1889 : pi. 2,f, 12-14. 

 ExsiCCATi: Ellis & Ev. N. Am. "Bun^i 2688; Seym. & Earle, Econ. Fungi C 133. 



1. B. lineatunt. 



2. 

 3. 

 4. 

 5. 



B. crastophilum 

 E. irreguXare , 

 E. speciosum, 

 E. caricinum. 



5. ENTYLOMA DeBary, Bot. Zeit. 32 : 101. 1874. 



Rhamphospora D. D. Cunn. Sci. Mem. Med, Off. Army India 3 : 32. 1888. 



Sori usually in the leaves, generally forming discolored but little distorted areas, per- 

 manently embedded in the tissues ; spores single, produced terminally or intercalary in 

 the fertile mycelium which does not entirely disappear through gelatinization , free (some- 

 times irregularly adhering through pressure), hyaline to yellowish or reddish-yellow, oc- 

 casionally dark-colored, of medium size ; germination by a short promycelium bearing a 

 terminal group of sporidia which usually conjugate in pairs and produce secondary sporidia 

 or infection-threads ; conidia often present, formed by germination of the spores in situ 

 or on the mycelium, protruding through the stomata, hyaline, usually elongate. 



Type, Protomyces microsporus Ung. 



Sori black; spores tinted reddish -brown, often adhering together. 

 Spores chiefly 8-14i^ in length. 



Sori forming oblong to linear striae. 

 Spores 7-11 (^ in length. 

 Spores 8-14 M in length. 

 Spores chiefly regular. 

 Spores often irregular and elongate. 

 Sori often fusing to form a continuous stratum. 

 Spores chiefly 15-22^ in length. 

 Sori white to reddish-brown ; spores hyaline or yellowish-tinted. 

 Spores not apiculate, often adhering somewhat. 

 Sori thin — in the un thickened tissues. 

 Conidia or sporidia hypophyllous. 



Spores chiefly 8-13 1«- in length, thin-walled (see also no. 16). 

 Sori angular. 



Sori without evident hypophyllous growth. 

 Sori with evident hypophyllous growth. 



Hosts: Ambrosiaceae, Carduaceae, Cichoriaceae. 

 Hosts : Menispermaceae. 

 Sori circular. 

 Spores chiefly 11-16 m in length, thick-walled. 

 Spore-walls evidently double. 

 Spore-walls not papillate. 



Spore-walls, occasionally, with evident papillae. 

 Double walls of spores not very evident. 



Sori rather conspicuous, 2-5 mm. or even larger. 

 Sori yellowish above, white beneath; spores 



often 9-12 f*. 

 Sori yellowish or reddish -brown, often bordered. 

 Sori small, usually less than 2 mm. in diameter. 

 Sori angular, usually with evident whitish 



growths. 

 Sori chiefly subcircular. 

 Spores chiefly 14-19 m in length. 

 Spores regular, subspherical. 

 Spores ovoid to subspherical, often angular. 

 Conidia lacking or not observed. 



Hosts : Ambrosiaceae, Carduaceae. 

 Sori often indefinite. 



e. E. Thalictri. 



9. E. compositaruni 

 8. E. Menispermi. 

 14. E. Floerkeae. 



7. E. Ranunculi. 

 12. E. arnicale. 



16. E. Lobeliae. 



17. E. australe. 



19. E. Saniculae. 



21. E. Linariae. 



22. E. Ellisii. 

 24. E.fuscum. 



10. E. polysporum. 



