APPENDIX. 1083 



P. 678, for " Apium leptophyllum " read " Apium Ammi (L.) Urban ", 



the older name. 



P. 679, after Cicuta maculata, insert: 



la. Cicuta Curtissii C. & R. CURTISS' WATER HEMLOCK. Similar to 

 Cicuta maculata, but with thicker ovate-lanceolate leaf-segments, the veins 

 prominent beneath; fruit orbicular, about 2 mm. long, constricted at tht 

 commissure. In wet soil, Va. and Ky. to Fla. and La. June-Aug. 



ib. Cicuta occidentals Greene. WESTERN WATER HEMLOCK. Similar 

 to Cicuta maculata, the oval to oblong fruit constricted at the commissure, 

 the ribs all projecting about equally, while in C. maculata the fruit is not 

 constricted at the commissure, and the lateral ribs are much the largest; 

 veins prominent on the lower surface of the leaflets. In wet soil, S. Dak. 

 and Neb. to Idaho and N. Mex. June-Sept. 



P. 685, for " Cymopterus montanus T. & G." read " Phellopterus mon- 

 tanus Nutt." The genus Phellopterus Nutt. differs from Cymopterus Nutt., 

 as shown by Coulter and Rose. 



P. 686, before SPERMOLEPIS, Raf., insert the genus: 



42a. PSEUDOTAENIDIA Mackenzie. 



An erect glabrous and glaucous perennial with stout rootstocks. 

 Leaves ternately decompound, almost identical with those of Taenidia 

 integerrima. Umbels compound. Involucre and involucels none, or 

 rarely of i or 2 bractlets. Calyx-teeth short. Fruit glabrous, oval or 

 obovate, strongly flattened dorsally, the dorsal and intermediate ribs 

 filiform, much narrower than the intervals, the lateral ribs thick, broadly 

 winged ; oil- tubes i or 2 in the intervals ; stylopodium very short or none. 

 [Greek, false Taenidia.] A monotypic genus. 



i. Pseudotaenidia montana Mackenzie. Plant 4-8 dm. high, the 

 stems striate. Leaf-blades 2~3-ternate, the segments entire, mucro- 

 nate, ovate to oblong-lanceolate or oblanceolate, 1-3 cm. long, 6-20 mm. 

 wide, strongly veined beneath; petioles dilated and sheathing at the 

 base; peduncles 6-20 cm. long; rays of the umbels 8-12, varying from 

 i to 3 cm. long; rays of the umbellets 3-7 mm. long; fruit 5-6 mm. 

 long, 4 mm. wide. Mountains of Va. and W. Va. 



P. 687. Substitute for genus 44. PEUCEDANUM L., the name LOMA- 

 TIUM Raf. As shown by Coulter and Rose, the Old World Peucedanums 

 are generically distinct from the North American plants which have been 

 so called. Our species, according to these authors, are as follows: 



1. Peucedanum nudicaule = Lomatium orientale C. & R. 



2. Peucedanum foeniculaceum = Lomatium daucifolium (Nutt.) C. 

 & R. 



3. Peucedanum Kingri is referred to Cynomarathrum Nuttallii (A. Gray) 

 C. & R. 



4. Peucedanum villosum =: Lomatium foeniculaceum (Nutt.) C. & R. 



P. 690, after Cornus Am&mum, insert: 



5a, Cornus obliqua Raf. PURPUS' CORNEL. Similar to C. Amo- 

 mum, the leaves usually narrower, mostly ovate-lanceolate, narrowed 

 or cuneate at the base, papillose on the under side, and appearing glau- 

 cous, the veins fewer (usually 4 or 5 pairs); flowers rather smaller; fruit 

 light blue. Moist soil, Que. to Alberta, Conn., Ky., Mo. and Kans. 

 (C. Purpusi Koehne.) 



