@booklet {25,
	title = {Studies in the Boraginaceae 25. A revaluation of some genera of the Lithospermeae},
	howpublished = {Journal of the Arnold Arboretum},
	volume = {34
},
	year = {1953},
	month = {1953///},
	pages = {258 - 299},
	keywords = {boraginaceae},
	author = {Johnston,I.M.}
}
@booklet {26,
	title = {Studies in the Boraginaceae 26. Further revaluations of the genera of the Lithospermeae},
	howpublished = {Journal of the Arnold Arboretum},
	volume = {35},
	year = {1954},
	month = {1954///},
	pages = {81},
	keywords = {boraginaceae, lithospermeae, Lobostemon},
	author = {Johnston,I.M.}
}
@booklet {27,
	title = {Studies in the Boraginaceae 27. Some observations concerning the Lithospermeae},
	howpublished = {Journal of the Arnold Arboretum},
	volume = {34},
	year = {1954},
	month = {1954///},
	pages = {258 - 299},
	keywords = {boraginaceae, lithospermeae},
	author = {Johnston,I.M.}
}
