Samull Ruellia blechum However, research seems worthwhile because of the medicinal uses in different parts of the world. GNA — Species for which a rank is not applicable. Though previously placed in the genus Blechum, studies indicate Blechum and a few other genera should be subsumed into Ruellia Tripp et al. Taxonomic Tree Top of page Domain: In OctoberI brought a pyramidxtum of this plant home to observe it blexhum closely.
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However, it is not Prunella vulgaris. There was very little information on the status of Blechum pyramidatum in Singapore although it had been cultivated as a herb. The name of this plant was mentioned in a local publication  based on a flora survey done at the Upper Thomson Forest in However, no picture of this plant was shown in the article.
Another source that mentioned this plant was from a blog posted in on sighting in Seletar area. However, the plant named as Blechum pyramidatum should be Nelsonia canescens Blue Pussyleaf instead. In the local plant pictorial guide Plants in Tropical Cities published in page , this plant was also named as Prunella vulgaris.
The vascular plant flora of Upper Thomson Forest. Nature in Singapore ; Read article In October , I brought a pot of this plant home to observe it more closely. The fruits are in the form of capsules of about 10 millimetres mm long. The matured capsule is being wrapped around with dried and hairy sepals of a similar length. Each capsule houses up to 7 seeds of about 2 mm long. Seeds are dispersed by explosive mechanism of the capsule.
The length of the capsule from my plant seemed to be much longer than that showed in the University of Guam website. DSC
BLECHUM PYRAMIDATUM PDF