

246 



POGO SIPHON. 



Caulibus 200—250 cm. altis obtuse tetragonis, petiolis 1 — 2 cm. longis, iaminis 11 — 14 

 cm. lono-is his 7 — 9 cm. latis basi abrupte truncatis, bracteis inferioribus 40 mm. longis 

 his 20 mm, latis, reliquis sursum decrescentibus 18 — 12 mm. longis his 14 — 9 mm. latis, 





bractoolis lanceolatis 6 — 10 mm. longis, calyce 11 mm. longo hoc 5 mm. lato — tubo caly 

 6 mm. lon^o, dentibus 5 mm. longis his basi 3 mm. latis, corollce tubo 22 mm. longo 

 parte tubi asquali 10 mm. longa, limbo 8 mm. lato, labio postico 9 mm. longo hoc 

 8 mm. lato, labio antico 8 mm. longo hoc 16 mm. lato, nuculis maturis 5 mm. longis 



his 3 mm. latis. 



Plate 75. Gomphostemma Wallichii Prain. Specimen from Maymyo, Upper Burma; 



King's Collector. 



This speoies resembles G. Heyneanum, but is at once distinguished by its much larger corollas, 

 its different bracts, and its interrupted spike. Its nearest ally is however G. nutans, which has the same 

 calyx, and, except for its slightly denser tomentum, the same corolla. From G. nutans the large broad- 

 based bracts, the long erect interrupted spikes, and the stout stems distinguish it. It is much less like 

 (r. strobillnum, with which it has sinoe 1835 been associated. That species differs in tomentum, has 

 much larger leaves which taper to the base, a calyx softly tomentose with long hairs, a shorter corolla 

 and smaller bracts which are cuneate at the base, and subequal along the spike. 



In 1821, as is shown by a manuscript note in Herb. Calcutt., Dr. Wallich considered the plant entitled 

 to specific rank. In 1828 [LUh. Cat. n. 2151/2) it was issued, in deference to Mr. Bentham's judgment, 

 as a variety of G. strobilinum, and in 1831 (PL As. Bar. ii, 12) Mr. Bentham continued this treatment. 

 But in 1835 (Lab. Gen. et 8p. 647), though no further examples are quoted, it was unconditionally 

 reduced to G. atrobilinum, a treatment which has been followed in all subsequent works. Numerous 

 examples of both plants have been communicated since the "Wallichian distribution, and these sbow 

 that Dr. Wallich's original opinion was just; in order, however, to avoid the inconvenience of issuing 

 a name that did not originally find acceptance, the species has been re-named and dedicated to that 

 botanist. 



One circumstance in connection with this species has to be mentioned. This, which corresponds 

 to n. 2151/2 of the Wallichian catalogue, has been more frequently collected and distributed than 

 the plant which corresponds with Cat. n. 2151/1. The name " G. strobillnum" having been applied to 

 both has thus become more associated with this species than with the plant to which that name 

 really belongs and to which it has in this paper been limited. 





2. Gomphostemma strobilinum Wall. (1828). 



Elata vel humilis caule robusto sulcato scabro, folds subsessilibus vel breve petio- 

 latis basi attenuatis elliptico-ovatis apiee acutis margine serratis supra hispidis subtus 

 petiolisque toinentosis vel glabrescentibus, spica erecta basi tantum interrupta, bracteis 

 supparibus ovatolanceolatis calycem viridem superantibus basi cuneatim attenuatis, calycis 

 tubo dentibus longiore, corolla flava calyca 2-plo longiore parum incurva, tubo medio 

 intus antioe hirsuto, labio postico extus parce vestito corolla ceteruru glabrescente, stylo 

 glabro, nuculis brunneis rugosis glabris, 



Var. typica; elatior caule profunde sulcato, bracteis apice acutis antice 



irregulariter dentatis basi integris, foliis rugosis subtus tomentosis. — G. 

 strobilinum Wall., Cat n. 2151/1 (1828;; Benth., Wall. PL As. Bar. 

 ii., 12 (1831), Lab. Gen. et Sp. 647, in parte (1835) et DC. Prodr. xii, 

 550, in parte (1848); Walp., Rep. iii, 896, in parte (1845); Miq., Ftor. 



t 



lnd. Bat. ii, 989 (1856).-— G. strobilinum var. typica Hook. /., Ftor. 

 Brit. Ind. iv, 696, in parte (1885). 



4 



