78 TWENTY-NINTH REPORT ON THE STATE MUSEUM. 
Melasmiavalnea) 20.3 2202s noes Alnus serrulata. 
Asteroma Rose DC oid. ee eee Rose leaves. 
Septoma Coptidis BG C2. .5 0... Coptis trifolia. 
S. nodding ce CME. eens Rhus typhina. 
5: Toxicodendri ‘Curt .......... lee Toxicodendron. 
S. arapelitia 21d Co ie 2 6 sae op Vitis estivalis. 
S. destruens Desm .. 0. .6.0- 20 Malva rotundifolia. 
5. panouineas, Des7's)!.4))..!e- bs - Prunus serotina. 
5: Gerasina Pe th, 7 sso ts eee iP: A 
8. Hippocastani B. d& Br....... Adsculus Hippocastanum. 
8. RCETUAS Ue arcs nA ares ci Acer Pennsylvanica. 
S. IRolyeales Pde Pes sya Polygala paucifolia. 
8. ellacal ata cee ia sale Lathyrus palustris. 
S. Feabisi. GeO yeild Ce ea Rubus Canadensis. 
5. CHnothere Bat C ut. ges 24s (Enothera biennis. 
8. moaculosa "GE? ie. Lee i eae os Cuphea viscosissima. 
S. AATEC EE Ul. PSE cw eg ee Sambucus pubens. 
S. Brigerontis Pes: 2 eechacte ous Erigeron annuum. 
8. Nala ys eC! ke ak et nee ws Nabalus albus. 
8. ebebiee ey. 0 ae coe Lobelia spicata. 
S. Girone Ge Pes aad Vaccinium Pennsylvanicum. 
8. Kalmicola Scho |... 0 ww de: Kalmia latifolia. 
8. Werbens Did fe). Li. oa8 tees Verbena hastata. 
8. Werbascicola, Bod CO a2 cea Verbascum Blattaria. 
8. perophularin) es. oe ns dois. Scrophularia nodosa. 
8. Wilson Clinton... (5a. ese asd: Chelone glabra. 
S. Polygonorum Desm ......... Polygonum Persicaria. 
8. GN Gi Ve: Cian ee Regs eer ey Ulmus Americana. 
8. ochroleuca vB v@e © ects 5 vee 2 Castanea vesca. 
Ss. viride tingens Curt.......... Allium tricoccum. 
8. mirabilis Sse i ahicks es. Onoclea sensibilis. 
Vermicularia concentrica P. & C.. | Ee 7 
Pestalozzia Guepini Desm ......... Camellia Japonica. 
les Marive Clonton: o.oo ees Rhododendron maximum. 
Coryneum triseptatum Pk ......... Rt. maximum. 
The fourth family, the HypHomycerss, molds or filamentous fungi, 
contains comparatively few noxious species but among these few are 
some of the most pernicious foes of our cultivated plants. In the 
genus Peronospora we find such baneful pests as the potato mold, 
spinach mold, lettuce mold and onion mold. Ozdiwm monilioides 
Lk. which occurs on grass leaves and Otdium leucoconium Desm. 
which attacks rose leaves are regarded as conditions respectively of 
Erysiphe graminis and Spherotheca pannosa, the second form of 
which has not yet been detected with us. 
