The National Cactus and Succulent Journal
Diagram I. a Diagram showing the different angles of the leaf spirals in (A) H. reinwardtii where the low angle of the secondary counter spiral approximates that of the ... H. reinwardtii var. conspicua is rejected as a form of H. coarciata as many plants agreeing reasonably with Von. ... There is in all cases a lapse of 4-5 years between collection date and herbarium labelling except for Smith 7106, one year.
| Title | : | The National Cactus and Succulent Journal |
| Author | : | |
| Publisher | : | - 1972 |
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