Lowe, ?Man. Fl. Madeira 2: 76. 1872.?, 1872.

Lowe, ?Man. Fl. Madeira 1: 78. 1848.?, 1848.

Lowe, ?Man. Fl. Madeira 2: 78. 1872.?, 1872.

Lowe, ?Man. Fl. Madeira 2: 74. 1872.?, 1862.

Lowe, ?Man. Fl. Mad. 73. 1853.?, 1853.

Lowe, ?Man. Fl. Madeira 2(1) : 84. 1868.?, 1868.

Lowe, ?Trans. Cambridge Philos. Soc. 6: 536. 1838?, 1838.