Porpax microchilos (Dalzell) Schuit., Y.P.Ng & H.A.Pedersen, Bot. J. Linn. Soc.

Porpax microchilos (Dalzell) Schuit., Y.P.Ng & H.A.Pedersen, Bot. J. Linn. Soc. 186: 200. 2018. Fig. 3c View Fig

An epiphytic orchid endemic to peninsular India . Remarkably similar to the preceding species by having a synanthous habit, but Porpax microchilos differs mainly in having filiform, few-flowered scapes, alternate, whorled to semi-secund flowers, eglandular sepals and petals, and lip with entire, hyaline margin. As discussed in Dendrobium dalzellii , this species has also gone through the circumscriptions of Eria and Conchidium and is often recognized as Eria microchilos in most of the Indian literature, we followed the recent circumscription of Porpax by Ng et al. (2018).

A specimen at K (K000260025) with Dalzell’s annotation as D. microchilos is mixed with Porpax dalzellii , hence, we have not chosen it as a lectotype. The specimens at GH (GH00090173) and CAL (CAL0000081376) are also missing Dalzell’s annotation and are a mixture of two different species. In the absence of any original material, another specimen at K (K0008839993) with four plants mounted on the top left corner, labelled by J.D. Hooker as ‘167. D. microchilos Bombay presidency, Dalzell’, is selected here as the neotype. It is one of the collections perhaps sorted and numbered by J.E. Stocks (see the discussion under J.E. Stocks labels on orchids in Western India ).

5. Dendrobium nodosum Dalzell View in CoL , Hooker’s J. Bot. Kew Gard. Misc. 4: 292. 1852. Neotype (designated here): INDIA , s.loc., s.d., Dalzell ( ex Herb. Stocks 30) (K [K001085563!]).

An epiphytic orchid, endemic to southern India and Sri Lanka ( fide Seidenfaden 1980), often confused with Dendrobium macraei Lindl. , but can be recognized by its oblong pseudobulbs and axillary, solitary flowers with linear sepals and petals. The original material precisely from ‘Ram Ghaut’ with Dalzell’s annotation as ‘ Dendrobium nodosum ’ is not traceable. Two sheets of Dalzell’s collection are housed at K, labelled by J.E. Stocks (Orchidae no. 30), and one of them has been annotated or labelled by Dalzell.The sheet K000960025 has a small packet wherein a dissected flower has been kept, the same has probably been illustrated by Lindley. The other sheet K001085563 has four specimens pasted on it and has different labels: ‘Herb. Stocks’ (possibly purchased by Sir William Hooker), an engraved label ‘Herb. Hook fil. & Thomson’ (perhaps after 1855 when Joseph Hooker & Thomson were writing Flora Indica ), and Stocks pencil label as ‘Orchideae no. 30, specimen from Dalzell’. It also has a packet marked with the pencil pointing to the extreme right specimen and contains a fragmented flower, it has been designated here as the neotype.

6. Dendrochilum roseum Dalzell View in CoL , Hooker’s J. Bot. Kew Gard. Misc. 4: 291. 1852, non (Swartz, 1805). Neotype (designated here): INDIA , s. loc., s.d., Dalzell s.n. (K!)