Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 82American Philosophical Society, 1940 |
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Сторінка 480
... genera . They are frequently monotypic , and seldom contain as many as 20 species . The great genera , such as Phyllanthus , Croton , Acalypha , and Euphorbia , are not exclusively monœcious , but diœcious species are relatively rare ...
... genera . They are frequently monotypic , and seldom contain as many as 20 species . The great genera , such as Phyllanthus , Croton , Acalypha , and Euphorbia , are not exclusively monœcious , but diœcious species are relatively rare ...
Сторінка 488
... genera Crypteronia , Blatti , Duabanga , Punica , and the various genera of the Lecythidaceae are self - fertile , because travellers find isolated fruiting trees . Conditions in the Rhizo- phoraceae are unknown . Nyssa appears to be ...
... genera Crypteronia , Blatti , Duabanga , Punica , and the various genera of the Lecythidaceae are self - fertile , because travellers find isolated fruiting trees . Conditions in the Rhizo- phoraceae are unknown . Nyssa appears to be ...
Сторінка 492
... genera Rhododendron , Gaultheria , Vaccinium , and Erica , have been studied , as well as representatives of some of the smaller genera , such as Ledum , Menziesia , Loiseleuria , Kalmia , Leucothoë , Andromeda , Lyonia , Epigaea ...
... genera Rhododendron , Gaultheria , Vaccinium , and Erica , have been studied , as well as representatives of some of the smaller genera , such as Ledum , Menziesia , Loiseleuria , Kalmia , Leucothoë , Andromeda , Lyonia , Epigaea ...
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