BULLETIN 
OF 
The New York Botanical Garden 
Vol. 3 
No. 9. 
BOTANICAL CONTRIBUTIONS. 
New or Noteworthy North American Crassulaceae. 
By N. L. BRITTON AND J. N. ROSE. 
TILLAEASTRUM Britton. 
Bulliarda DC. Bull. Soc. Philom. 3%: 1. 1801. Not Neck. 
1790. 
Type species, 77//aea aguatica L. 
1. TILLAEASTRUM AQUATICUM (L.) Britton. 
Tillaea aquatica L. Sp. Pl. 128. 1753. 
Tillaea simplex Nutt. Jour. Acad. Phila. r: 114. 1817. 
Bulliarda aquatica DC. Prod. 3: 382. 1828. 
Tillaea angustifolia Nutt.; T. & G. FIN. Am. 1: 558. 1840. 
Tillaea leas Bolanderi S. Wats. in Brew. & Wats. 
Bot. Cal. 1: 209. 1876. 
Tillaea Bolandert Greene, F). Fran. 183. 1891. 
Crassula aguatica Schoen). in E. & P. Nat. PA. 3%: 37. 
S91. 1891. 
In mud, Nova Scotia to Maryland, Louisiana and Texas, Wash- 
ington to Lower California and Colorado. Europe to northern 
Africa. 
2. TILLAEASTRUM VIRIDE (S. Wats.) Britton. 
Tillaea viridis S. Wats. Proc. Am. Acad. 23: 272. 1888. 
Chihuahua. San Luis Potosi. 
3. Tirrazastrum Drummonpu (T. & G.) Britton. 
Tillaea Drummondii T. & G. Fl. N. Am. 1: 558. 1840. 
Muddy places, Louisiana to San Luis Potosi, California and 
Washington. 
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